Dang Sheng Su

Structure and electrical conductivity of porous zirconium titanate ceramics produced by mechanochemical treatment and sintering (2009)

Gajović, Andreja, Šantić, Ana, Djerdj, Igor, Tomašić, Nenad, Moguš-Milanković, Andrea, Su, Dang Sheng

High-energy ball milling has been employed for mechanochemical treatment of TiO2 and ZrO2, thus facilitated the solid-state reaction toward ZrTiO4. The ceramics with different degrees of porosity...

Direct synthesis of carbon nanofibers on modified biomass-derived activated carbon (2009)

Chen, Xiaowei, Timpe, Olaf, Hamid, Sharifah B. A., Schlögl, Robert, Su, Dang Sheng

Carbon nanofibers were synthesized on activated carbons produced from agricultural waste using chemical vapor deposition. Importantly, iron already present in the ash content of the activated carbon...

Synthesis and Electrode Performance of Nanostructured V2O5 by Using a Carbon Tube-in-Tube as a Nanoreactor and an Efficient Mixed-Conducting Network (2009)

Hu, Yong-Sheng, Liu, Xi, Müller, Jens-O., Schlögl, Robert, Maier, Joachim, Su, Dang Sheng

By using CTIT as an efficient mixed conducting network, a new optimised nanostructured electrode design has been proposed here for high energy and high power lithium batteries. A V2O5/CTIT...

On the nature of oxygen-containing surface groups on carbon nanofibers and their role for platinum deposition (2009)

Plomp, Arjan J., Su, Dang Sheng, De Jong, Krijn P., Bitter, Johannes Hendrik

XPS and acid-base titrations were used to investigate the nature and stability of oxygen-containing surface groups on carbon nanofibers (CNF) and platinum-containing CNF. During heat treatments in...

Fe and Pt carbon nanotubes for the electrocatalytic conversion of carbon dioxide to oxygenates (2009)

Gangeri, M., Perathoner, Sieglinda, Caudo, S., Centi, Gabriele, Amadou, J., Bégin, D., ...

Using Pt/CNT or Fe/CNT electrocatalysts it is possible to convert carbon dioxide to liquid fuels, particularly isopropanol. Fe/CNT shows a better behavior than Pt/CNT, although a faster deactivation....

Controlled synthesis of high performance carbon/zeolite T composite membrane materials for gas separation (2009)

Liu, Qingling, Wang, Tonghua, Guo, Hongchen, Liang, Changhai, Liu, Shili, Zhang, Zhiguo, ...

A simple approach has been developed to synthesize the carbon/zeolite T composite membrane materials with the high gas separation performance. The precursors of the composite membrane are composed of...

Analysis of the structure and chemical properties of some commercial carbon nanostructures (2009)

Tessonnier, Jean-Philippe, Rosenthal, Dirk, Hansen, Thomas W., Hess, Christian, Schuster, Manfred E., Blume, Raoul, ...

For many years the scientific community has believed in a promising future for carbon nanotubes for various applications in such diverse fields as polymer reinforcement, adsorption, catalysis,...

The use of terahertz spectroscopy as a sensitive probe in discriminating the electronic properties of structurally similar multi-walled carbon nanotubes (2009)

Parrott, Edward P.J., Zeitler, J. Axel, McGregor, James, Oei, Shu-Pei, Tan, Swee-Ching, Milne, William I., ...

The use of terahertz spectroscopy as a sensitive probe in discriminating the electronic properties of multi-walled carbon nanotubes. We show that terahertz spectroscopy can definitively distinguish...

Synthesis of Thermally Stable and Highly Active Bimetallic Au−Ag Nanoparticles on Inert Supports (2009)

Liu, Xiaoyan, Wang, Aiqin, Yang, Xiaofeng, Zhang, Tao, Mou, Chung-Yuan, Su, Dang Sheng, ...

A general two-step approach has been developed for the synthesis of very small and sintering-resistant bimetallic gold−silver nanoparticles on inert supports including commercial silica and...

Heteroatoms Increase the Selectivity in Oxidative Dehydrogenation Reactions on Nanocarbons (2009)

Frank, Benjamin, Zhang, Jian, Blume, Raoul, Schlögl, Robert, Su, Dang Sheng

Boron makes it selective: Carbon nanotubes (CNTs) modified by boron oxide catalyze the oxidative dehydrogenation of propane to propene with remarkable selectivity. Nanocarbon can be an attractive...

Oxidative dehydrogenation of 9,10-dihydroanthracene using multi-walled carbon nanotubes (2009)

Bégin, Dominique, Ulrich, Gilles, Amadou, Julien, Su, Dang Sheng, Pham-Huu, Cuong, Ziessel, Raymond

Multi-walled carbon nanotubes (MWCNTs) have been used in the oxidative dehydrogenation of 9,10-dihydroanthracene in an organic solvent (toluene) using molecular oxygen as the oxidant, and in the...

Highly Ordered Mesoporous Carbon as Catalyst for Oxidative Dehydrogenation of Ethylbenzene to Styrene (2009)

Su, Dang Sheng, Delgado, Juan Jose, Liu, Xi, Wang, Di, Schlögl, Robert, Wang, Lifeng, ...

We demonstrate that mesoporous carbon without deposition of metal particles is a highly active catalyst. It exhibits both high activity and selectivity in oxidative dehydrogenation of ethylbenzene to...

Amino-functionalized carbon nanotubes as solid basic catalysts for the transesterification of triglycerides (2009)

Villa, Alberto, Tessonnier, Jean-Philippe, Majoulet, Olivier, Su, Dang Sheng, Schlögl, Robert

Multiwalled carbon nanotubes grafted with various amino groups show high activity and stability when used as basic catalysts for the transesterification of triglycerides.

Au-Pd/AC as catalysts for alcohol oxidation: effect of reaction parameters on catalytic activity and selectivity (2009)

Villa, Alberto, Janjic, Nikolina, Spontoni, Paolo, Wang, Di, Su, Dang Sheng, Prati, Laura

The oxidation of different alcohols with molecular oxygen in water has been investigated using a range of activated carbon-supported Au-Pd bimetallic catalysts. The effect of the Au-Pd ratio on the...

Controlling the yield and structure of carbon nanofibers grown on a nickel/activated carbon catalyst (2009)

Rinaldi, Ali, Abdullah, Norly, Ali, Muataz, Furche, Andreas, Abd Hamid, Sharifah Bee, Su, Dang Sheng, ...

Carbon nanofibers (CNFs) were grown via the chemical vapor deposition of C2H4 on an activated carbon (AC)-supported Ni catalyst. The texture of the CNF/AC composites can be tuned by varying the...

Composites of molecular-anchored graphene and nanotubes with multi-tubular structure: a new type of carbon electrodes (2009)

Liu, Xi, Hu, Yong-Sheng, Müller, Jens-Oliver, Maier, Joachim, Schlögl, Robert, Su, Dang Sheng

Graphene-carbon nanotube nanocomposites were prepared with a multi-tubular coaxial and hollow cavity microstructure. Nano graphene sheets were anchored with oxalic acid and consequently linked with...

Iron impregnation on the amorphous shell of vapor grown carbon fibers and the catalytic growth of secondary nanofibers (2009)

Xia, Wei, Bitter, Johannes H., Su, Dang Sheng, Quian, Jun, Muhler, Martin

Vapor grown carbon fibers (VGCFs) with diameters of several microns were synthesized and investigated by high resolution transmission electron microscopy. It was found that the shell of the VGCFs...

Selective Deposition of Metal Nanoparticles Inside or Outside Multiwalled Carbon Nanotubes (2009)

Tessonnier, Jean-Philippe, Ersen, Ovidiu, Weinberg, Gisela, Pham-Huu, Cuong, Su, Dang Sheng, Schlögl, Robert

A general method is described for the deposition of metal nanoparticles selectively either inside or outside of carbon nanotubes (CNTs). The method is based on the difference in the interface...

Titania Nanocrystals and Adsorptive Nanoporous Polymer Composites: An Enrichment and Degradation System (2009)

Zhang, Yonglai, Wei, Shu, Zhang, Wei, Xu, Yi-Jun, Liu, Sen, Su, Dang Sheng, ...

Novel composites of titania nanocrystals and adsorptive nanoporous polymers have been successfully synthesized via a two-step solvothermal pathway. These composites are developed as bifunctional...

New challenges for the immune defense? Effects of industrially relevant multiwalled carbon nanotubes on human Jurkat T cells in vitro (2009)

Thurnherr, Tina, Su, Dang Sheng, Diener, Liliane, Weinberg, Gisela, Manser, Pius, Pfänder, Norbert, ...

Human exposure to engineered nanomaterials is likely to increase dramatically in the near future. However, studies on the effects of these novel materials on the immune system, which protects the...

Metal-Free Phenanthrenequinone Cyclotrimer as an Effective Heterogeneous Catalyst (2009)

Zhang, Jian, Wang, Xuan, Su, Qi, Zhi, Linjie, Thomas, Arne, Feng, Xinliang, ...

A phenanthrenequinone macrocyclic trimer was synthesized and used as a heterogeneous catalyst for oxidative dehydrogenation of ethylbenzene. This model molecule under comparable kinetic conditions is...

Heteroatome steigern die Selektivität der oxidativen Dehydrierung an Nanokohlenstoff (2009)

Frank, Benjamin, Zhang, Jian, Blume, Raoul, Schlögl, Robert, Su, Dang Sheng

Mit Bor kommt die Selektivität: Kohlenstoffnanoröhren (CNTs), die mit Boroxid modifiziert wurden, katalysieren die oxidative Dehydrierung von Propan zu Propen mit einer beachtlichen Selektivität....

Oxidative purification of carbon nanotubes and its impact on catalytic performance in ODH reactions (2009)

Rinaldi, Ali, Zhang, Jian, Frank, Benjamin, Su, Dang Sheng, Abd Hamid, Sharifah Bee, Schlögl, Robert

Oxidative purification with mild diluted HNO3 followed by NaOH washing lowers the amount of amorphous carbon deposited at multiwalled carbon nanotubes (CNTs). The graphitic structure can be...

The Use of Natural Materials in Nanocarbon Synthesis (2009)

Su, Dang Sheng

Nanomaterials are shifting from laboratory scale preparation to industrial production. The cost of energy and starting materials (feed stock, catalyst and support) consumed or used in the mass...

Metal-free Heterogeneous Catalysis for a Sustainable Chemistry (2009)

Su, Dang Sheng, Zhang, Jian, Thomas, Arne, Wang, Xinchen, Paraknowitsch, Jens, Schlögl, Robert

The science and technology of catalysis are being challenged by the facts that fossil energy and other natural resources (among them water) are exhausting and the climate changes rapidly with global...

Defect-Mediated Functionalization of Carbon Nanotubes as a Route to Design Single-Site Basic Heterogeneous Catalysts for Biomass Conversion (2009)

Tessonnier, Jean-Philippe, Villa, Alberto, Majoulet, Olivier, Su, Dang Sheng, Schlögl, Robert

Graft it! Target active sites were directly grafted onto structural defects of carbon nanotubes (see picture) by electrophilic attack. This synthetic route is faster and more efficient than other...

Defect-Mediated Functionalization of Carbon Nanotubes as a Route to Design Single-Site Basic Heterogeneous Catalysts for Biomass Conversion (2009)

Tessonnier, Jean-Philippe, Villa, Alberto, Majoulet, Olivier, Su, Dang Sheng, Schlögl, Robert

Aktive Zentren wurden direkt durch einen elektrophilen Angriff an Strukturdefekten von Kohlenstoffnanoröhren eingeführt (siehe Bild). Dieses Syntheseverfahren ist schneller und effizienter als...

Ionic Liquids as Precursors for Nitrogen-Doped Graphitic Carbon (2009)

Paraknowitsch, Jens Peter, Zhang, Jian, Su, Dang Sheng, Thomas, Arne, Antonietti, Markus

Nitrogen-doped carbons are prepared by thermolysis of two organic, nitrogen-rich ionic liquids (see figure). The nitrogen content can be adjusted by the thermolysis temperature. As the precursors are...

Nanostructured Carbon Materials for Electrochemical Energy Storage Applications (2009)

Su, Dang Sheng, Schlögl, Robert

Electrochemical energy storage is one of most important technologies for a sustainable future of our society in times of energy crisis and global warming. Lithium ion batteries and electric double...

Transesterification of Triglycerides Using Nitrogen-Functionalized Carbon Nanotubes (2009)

Villa, Alberto, Tessonnier, Jean-Philippe, Majoulet, Olivier, Su, Dang Sheng, Schlögl, Robert

Nitrogen-functionalized carbon nanotubes were synthesized by grafting amino groups to the surface of the nanotubes. The nanotubes exhibited promising results in the base-catalyzed liquid phase...

Soot Structure and Reactivity Analysis by Raman Microspectroscopy, Temperature Programmed Oxidation and High Resolution Transmission Electron Microscopy (2009)

Knauer, Markus, Schuster, Manfred E., Su, Dang Sheng, Schlögl, Robert, Niessner, Reinhard, Ivleva, Natalia P.

Raman Microspectroscopy (RM), Temperature Programmed Oxidation (TPO), High Resolution Transmission Electron Microscopy (HRTEM) and Electron Energy Loss Spectroscopy (EELS) were combined to get...

Tuning the acid/base properties of nanocarbon by functionalization via amination (2009)

Arrigo, Rosa, Hävecker, Michael, Wrabetz, Sabine, Blume, Raoul, Lerch, Martin, Knop-Gericke, Axel, ...

The acidic and basic properties of vapour grown carbon nanofibers (VGCNFs) have been tuned by treatment of the oxidized CNFs with NH3. The effect of treatment temperature on the types of nitrogen...

Pd on carbon nanotubes for liquid phase alcohol oxidation (2009)

Villa, Alberto, Wang, Di, Dimitratos, Nikolaos, Su, Dang Sheng, Trevisan, Valentina, Prati, Laura

Pd nanoparticles supported on carbon nanotubes (CNTs) showed a higher selectivity than Pd nanoparticles supported on activated carbon (AC) in the liquid phase oxidation of benzylic alcohol to...

Influence of the microstructure of carbon nanotubes on the oxidative dehydrogenation of ethylbenzene to styrene (2009)

Delgado, Juan José, Chen, Xiaowei, Tessonnier, Jean-Philippe, Schuster, Manfred E., Del Rio, E., Schlögl, Robert, ...

The effect of graphitization of carbon nanotubes (CNTs) on the oxidative dehydrogenation of ethylbenzene to styrene was studied. An elimination of functional groups was observed by treating the...

The role of mechanically induced defects in carbon nanotubes to modify the properties of electrodes for PEM fuel cell (2009)

Centi, Gabriele, Gangeri, M., Fiorello, M., Perathoner, Sieglinda, Amadou, Julien, Bégin, Dominique, ...

The characteristics and reactivity of two anodes based on Pt supported on carbon nanotubes (CNTs) without or with defects induced by ball-milling are studied by SEM, TEM, cyclic voltammetry (CV) and...

ODH @ CNTs – Metal-free Catalytic Alkane Activation (2009)

Frank, Benjamin, Zhang, Jian, Liu, Xi, Morassutto, M., Schomäcker, Richard, Schlögl, Robert, ...

The conversion of alkanes into higher valued olefins by oxidative dehydrogenation (ODH) using supported transition metal oxides is a topic of intense research, however, the yield of alkenes is still...

Gold sols as catalyst in the glycerol oxidation: the role of stabilizer (2009)

Villa, Alberto, Wang, Di, Su, Dang Sheng, Prati, Laura

Polyvinylalcohol (PVA), tetrakis hydroxypropyl phosphonium chloride (THPC) and citrate-stabilized gold nanoparticles (AuNPs) have been synthesized and tested in the liquid phase oxidation of...

Surface species structure and activity in NO decomposition of an anatase-supported V–O–Mo catalyst (2008)

Kornelak, Pawel, Su, Dang Sheng, Thomas, C., Camra, J., Wesełucha-Birczyńska, Aleksandra, Toba, M., ...

The paper concerns the evolution of surface species of a V–O–Mo/anatase catalyst in the course of its thermal treatment in oxidising and/or reducing conditions. The catalyst was obtained by the...

Bimetallic Gold/Palladium Catalysts: Correlation between Nanostructure and Synergistic Effects (2008)

Wang, Di, Villa, Alberto, Porta, Francesca, Prati, Laura, Su, Dang Sheng

Au nanoparticles are known to be a good catalyst or an effective promoter for a wide range of catalytic reactions. Bimetallic Au-Pd nanoparticles supported on activated carbon were synthesized...

Selective filling of carbon nanotubes with metals by selective washing (2008)

Fu, Qiang, Weinberg, Gisela, Su, Dang Sheng

A straightforward method is presented to produce catalyst particle-filled carbon nanotubes. Based on capillarity and surface tension, a simple strategy was developed to selectively fill carbon...

Correlation between the microstructure and the electrical properties of ZrTiO4 ceramics (2008)

Ličina, Vesna, Gajović, Andreja, Moguš-Milanković, Andrea, Djerdj, Igor, Tomašić, Nenad, Su, Dang Sheng

A series of ZrTiO4 (ZT) ceramics were prepared by sintering ball-milled precursor powders. Ceramics with homogenously dispersed micropores containing both low-temperature (ordered) and...

Nanostructure of thin silicon films by combining HRTEM, XRD and Raman spectroscopy measurements and the implication to the optical properties (2008)

Gajović, Andreja, Gracin, Davor, Djerdj, Igor, Tomašić, Nenad, Juraić, Krunoslav, Su, Dang Sheng

A series of thin silicon films with different degrees of crystallinity were prepared by decomposition of silane gas highly diluted with hydrogen, in radiofrequency glow discharge. The crystallite...

Influence of mechanochemical processing to luminescence properties in Y2O3 powder (2008)

Gajović, Andreja, Tomašić, N., Djerdj, Igor, Su, Dang Sheng, Furić, K.

In high purity Y2O3 powders presence of small amount of erbium ions in cation sites was identified due to the luminescence bands observed by Raman spectrometer. The decrease of the luminescence...

Oxidative dehydrogenation of 1-butene to butadiene over carbon nanotube catalysts (2008)

Liu, Xi, Su, Dang Sheng, Schlögl, Robert

We report here the first application of CNTs as catalysts in the ODH of 1-butene to butadiene. The catalytic performance of the CNTs is remarkable high and stable, superior to that of activated...

Cytotoxicity and Inflammatory Potential of Soot Particles of Low-Emission Diesel Engines (2008)

Su, Dang Sheng, Serafino, Annalucia, Müller, Jens-Oliver, Jentoft, Rolf E., Schlögl, Robert, Fiorito, Silvana

We evaluated, in vitro, the inflammatory and cytotoxic potential of soot particles from current low-emission (Euro IV) diesel engines toward human peripheral blood monocytederived macrophage cells....

Mount-Etna-Lava-Supported Nanocarbons for Oxidative Dehydrogenation Reactions (2008)

Su, Dang Sheng, Chen, Xiaowei, Liu, Xi, Delgado, Juan Jose, Schlögl, Robert, Gajović, Andreja

The Mount Etna lava stones containing iron oxide particles can be used as catalyst and support to synthesize and immobilize carbon nanotubes and nanofibers. We report on the use of the obtained...

Hydrothermal synthesis of microscale boehmite and gamma nanoleaves alumina (2008)

Liu, Ye, Ma, Ding, Han, Xiuwen, Bao, Xinhe, Frandsen, Wiebke, Wang, Di, ...

Novel uniform single-crystal boehmite leaf-like nanosheets with high anisotropy (with a lateral size of (4.5±0.5 μm)×(9.0±1.0 μm) and a thickness of 60–90 nm) and flower-like superstructures...

Surface Chemistry of Ag Particles: Identification of Oxide Species by Aberration-Corrected TEM and by DFT Calculations (2008)

Su, Dang Sheng, Jacob, Timo, Hansen, Thomas W., Wang, Di, Schlögl, Robert, Freitag, Bert, ...

Edges and steps have been identified as the locations of surface (O2) and subsurface oxygen atoms (O1) on silver particles by means of DTF calculations and aberration-corrected transmission electron...

Surface-Modified Carbon Nanotubes Catalyze Oxidative Dehydrogenation of n-Butane (2008)

Zhang, Jian, Liu, Xi, Blume, Raoul, Zhang, Aihua, Schlögl, Robert, Su, Dang Sheng

Butenes and butadiene, which are useful intermediates for the synthesis of polymers and other compounds, are synthesized traditionally by oxidative dehydrogenation (ODH) of n-butane over complex...

Nanoarchitecturing of Activated Carbon: New Facile Strategy for Chemical Functionalization of the Surface of Activated Carbon (2008)

Xu, Yi-Jun, Weinberg, Gisela, Liu, Xi, Timpe, Olaf, Schlögl, Robert, Su, Dang Sheng

Nanoarchitecturing of carbon nanospheres onto the surface of activated carbon (AC) gives birth to a new composite carbon material that features a hierarchical structure with macro- and nanometer...

Individual Fe-Co Alloy Nanoparticles on Carbon Nanotubes: Structural and Catalytic Properties (2008)

Zhang, Jian, Müller, Jens-Oliver, Zheng, Weiqing, Wang, Di, Su, Dang Sheng, Schlögl, Robert

We report the synthesis, characterization, and catalytic performance of Fe-Co alloy nanoparticles inside the tubular channel of carbon nanotubes. The homogeneous distributions of Fe and Co in the...

Facile synthesis of carbon nanotube/natural bentonite composites as a stable catalyst for styrene synthesis (2008)

Rinaldi, Ali, Zhang, Jian, Mizera, Jan, Girgsdies, Frank, Wang, Ning, Abd Hamid, Sharifah Bee, ...

Natural bentonite mineral, without any wet chemical treatment, was used directly to catalyze the growth of multi-wall CNTs and the produced CNTs/bentonite as an integrated composite stably catalyzed...

Growth behaviors of ultrathin ZnSe nanowires by Au-catalyzed molecular-beam epitaxy (2008)

Cai, Y., Wong, T. L., Chan, S. K., Sou, I. K., Su, Dang Sheng, Wang, N.

Ultrathin ZnSe nanowires grown by Au-catalyzed molecular-beam epitaxy show an interesting growth behavior of diameter dependence of growth rates. The smaller the nanowire diameter, the faster is its...

Simple Synthesis of Multiwalled Carbon Nanotubes from Natural Resources (2008)

Endo, Morinobu, Takeuchi, Kenji, Kim, Yoong Ahm, Park, Ki Chul, Ichiki, Takuya, Hayashi, Takaya, ...

The environmentally friendly and high efficient method for growing multi-walled carbon nanotubes (T) was developed by using naturally abundant resources: stone garnet powder (G) as a catalyst and...

Dynamic surface rearrangement and thermal stability of nitrogen functional groups on carbon nanotubes (2008)

Arrigo, Rosa, Hävecker, Michael, Schlögl, Robert, Su, Dang Sheng

Dynamic surface rearrangement and thermal stability of N-functional groups on carbon nanotubes (CNTs), obtained by functionalization of pristine CNTs with NH3, were studied by temperature-programmed...

Synthesis of TiO2 Thin Films: Relationship Between Preparation Conditions and Nanostructure (2008)

Ampelli, C., Passalacqua, Rosalba, Perathoner, Siglinda, Centi, Gabriele, Su, Dang Sheng, Weinberg, Gisela

The influence of the synthesis conditions (pH, HF concentration, procedure of application of the voltage) during the anodization of Ti foils to produce TiO2 thin films characterized by an ordered...

Carbon nanotube-induced preparation of vanadium oxide nanorods: application as a catalyst for the partial oxidation of n-butane (2007)

Chen, Xiaowei, Zhu, Zhen Ping, Hävecker, Michael, Su, Dang Sheng, Schlögl, Robert

A vanadium oxide-carbon nanotube composite was prepared by solution-baesd hydrolysis of NH4VO3 in the presence carbon nanotubes. The carbon nanotubes induce the nucleation of the 1D vanadium oxide...

Morphology-Controlled Nonaqueous Synthesis of Anisotropic Lanthanum Hydroxide Nanoparticles (2007)

Djerdj, Igor, Garnweimer, Georg, Su, Dang Sheng, Niederberger, Markus

The preparation of lanthanum hydroxide and manganese oxide nanoparticles is presented, based on a nonaqueous sol–gel process involving the reaction of La(OiPr)3 and KMnO4 with organic solvents such...

A Novel Catalyst for Synthesis of Styrene: Carbon Nanofibers Immobilized on Activated Carbon (2007)

Delgado, Juan José, Chen, Xiaowei, Su, Dang Sheng, Abd Hamid, Sharifah Bee, Schlögl, Robert

Carbon NanoFibers (CNFs) with hierarchically structure have been immobilized onto Activated Carbon (AC) by impregnation with an aqueous solution of Fe(CH3COO)2, reduction and subsequent chemical...

Simple Preparation of Honeycomb-like Macrostructured and Microporous Carbons with High Performance in Oxidative Dehydrogenation of Ethylbenzene (2007)

Wang, Lifeng, Zhang, Jian, Su, Dang Sheng, Ji, Yanyan, Cao, Xuejing, Xiao, Feng-Shou

Honeycomb-like macrostructured carbons with well-defined microporosity have been prepared from the microwave popping of maize followed by thermal carbonization. The obtained carbon material shows...

Single-phase gold/palladium catalyst: the nature of synergistic effect (2007)

Prati, Laura, Villa, Alberto, Porta, Francesca, Wang, Di, Su, Dang Sheng

The liquid phase oxidation of glycerol with oxygen has been studied using mono and bimetallic catalysts based on Au and Pd metals supported on activated carbon, in order to study the effect of the...

Temperature-Dependent Growth Direction of Ultrathin ZnSe Nanowires (2007)

Cai, Yuan, Chan, Siu Keung, Sou, Iam Keong, Chan, Yu Fai, Su, Dang Sheng, Wang, Ning

Semiconductor nanowires (NWs) are promising candidates for applications in nanoscale electronic and optoelectronic devices. In recent years, much effort has been devoted to synthesizing NWs with...

Commercial Fe- or Co-Containing Carbon Nanotubes as Catalysts for NH3 Decomposition (2007)

Zhang, Jian, Comotti, Massimiliano, Schüth, Ferdi, Schlögl, Robert, Su, Dang Sheng

Fresh commercial carbon nanotubes (CNTs) containing residual Co or Fe nanoparticles are highly active for NH3 decomposition while the microstructure of CNTs remains unchanged. The 10 catalysts are...

The influence of formation conditions on the growth and morphology of carbon trees (2007)

Ma, Hai-Long, Su, Dang Sheng, Jin, Guo-Qiang, Guo, Xiang-Yun

Carbon trees, quite different from those previously reported, have been produced by the catalytic chemical vapor deposition of toluene using ferrocene as the catalyst precursor. The influences of...

Macro–mesoporous silicas complex and the carbon replica (2007)

Sun, Junming, Ma, Ding, Zhang, He, Bao, Xinhe, Weinberg, Gisela, Su, Dang Sheng

Novel macroporous silicas with ordered mesoporous wall structures ( 15 nm in pore size) have been synthesized by finely balancing the emulsification of the oil phase with the self-assembly of the...

Oxide thin films based on ordered arrays of 1D nanostructure. A possible approach toward bridging material gap in catalysis (2007)

Centi, Gabriele, Passalacqua, Rosalba, Perathoner, Siglinda, Su, Dang Sheng, Weinberg, Gisela, Schlögl, Robert

TiO2 thin films based on ordered arrays of 1D nanostructures (nanorods, nanotubes) are proposed as suitable model materials in studies for bridging material and complexity gap in catalysis. The...

Nanocarbons: Efficient synthesis using natural lava as supported catalyst (2007)

Su, Dang Sheng, Rinaldi, Ali, Frandsen, Wiebke, Weinberg, Gisela

Low-cost mass production of CNTs becomes prerequisite for their applications in chemistry and catalysis in which the availability of large amounts of material with well-defined surface, chemical and...

Design and Preparation of Highly Active Pt-Pd/C Catalyst for the Oxygen Reduction Reaction (2007)

Li, Huanqiao, Sun, Gongquan, Li, Na, Sun, Shiguo, Su, Dang Sheng, Xin, Qin

ORR (Oxygen Reduction Reaction) has been studied on Pt-Pd/C catalyst both experimentally and theoretically to gain insight into the promotion effect of PtPd nanoclusters to ORR and to provide...

Single-Phase Titania Nanocrystallites and Nanofibers from Titanium Tetrachloride in Acetone and Other Ketones (2007)

Wu, Yu, Liu, Hong-Mei, Xu, Bo-Qing, Zhang, Zao-Li, Su, Dang Sheng

Single-phase titania nanomaterials were prepared by autoclaving titanium tetrachloride in acetone at 80 - 140 °C. Depending on the molar ratio of TiCl4 to acetone (TiCl4/Ac), TiO2 materials with...

Oxidative dehydrogenation of ethylbenzene to styrene over ultra-dispersed diamond and onion-like carbon (2007)

Su, Dang Sheng, Maksimova, Nadezhda I., Mestl, Gerhard, Kuznetsov, Vladimir L., Keller, Valérie, Schlögl, Robert, ...

The catalytic properties of sp3-hybridized ultra-dispersed diamond and sp2-hybridized onion-like carbon in the oxidative dehydrogenation of ethylbenzene to styrene were investigated, highlighting the...

Photoactive titania nanostructured thin films: Synthesis and characteristics of ordered helical nanocoil array (2007)

Perathoner, Siglinda, Passalacqua, Rosalba, Centi, Gabriele, Su, Dang Sheng, Weinberg, Gisela

Titania nanostructured thin films have been prepared by anodization of titanium foils at different voltages in the 10–20 V range. They have been characterized by field emission scanning electron...

Beaded Silicon Carbide Nanochains via the Carbothermal Reduction of Carbonaceous Silica Xerogel (2006)

Hao, Ya-Juan, Wagner, Jakob B., Su, Dang Sheng, Jin, Guo-Qiang, Guo, Xiang-Yun

Novel silicon carbide nanostructures, beaded nanochains, are prepared from the carbothermal reduction of a carbonaceous silica xerogel with cetyltrimethylammonium bromide and lanthanum nitrate as...

Supported Carbon Nanofibers for the Fixed-Bed Synthesis of Styrene (2006)

Delgado, Juan J., Vieira, Ricardo, Rehmann, Guillaume, Su, Dang Sheng, Keller, Nicolas, Ledoux, Marc J., ...

Nanocarbons with macroscopic shaping have been studied as catalyst for the oxidative dehydogenation of ethylbenzene to styrene. Similarly to powdery nanocarbons, the catalyst exhibited high and...

Experimental and theoretical determination of low electron energy loss spectra of Ag and Ru (2006)

Hébert, Cécile, Schöne, Wolf-Dieter, Su, Dang Sheng

We show the experimental and calculated q-dependent low energy loss electron energy loss spectrum of Ru and Ag. The spectra were calculated within the time-dependent density-functional theory...

Phase evolution in the alkane-P123-water-TEOS quadru-component system: a feasible route to different complex mesostructured materials (2006)

Sun, Junming, Ma, Ding, Zhang, H., Wang, C.L., Bao, Xinhe, Su, Dang Sheng, ...

Directed by the temperature-induced phase transformation in the alkane (from heptane to dodecane)–P123–water–TEOS quadru-component system, i.e., from a swollen inverse hexagonal phase (H2) to a...

Morphologies and microstructures of tree-like carbon produced at different reaction conditions in a CVD process (2006)

Ma, Hai-Long, Su, Dang Sheng, Klein-Hoffmann, Achim, Jin, Guo-Qiang, Guo, Xiang-Yun

Centimeter-size multi-branched tree-like carbon structures have been generated by the catalytic chemical vapor deposition of toluene using ferrocene as the catalyst precursor and investigated by...

Engineered Complex Emulsion System: Toward Modulating the Pore Length and Morphological Architecture of Mesoporous Silicas (2006)

Zhang, He, Sun, Junming, Ma, Ding, Weinberg, Gisela, Su, Dang Sheng, Bao, Xinhe

In the complex alkane/P123/TEOS/H2O emulsion system, an emulsion engineering method to modulate pore length and morphological architecture of mesoporous materials has been built. With fine tuning of...

Toward Monodispersed Silver Nanoparticles with Unusual Thermal Stability (2006)

Sun, Junming, Ma, Ding, Zhang, He, Liu, Xiumei, Han, Xiuwen, Bao, Xinhe, ...

A novel in situ autoreduction route has been developed, by which monodispersed silver nanoparticles with tunable sizes could be easily fabricated on silica-based materials, especially inside the...

Synthesis and functional verification of the unsupported active phase of VxOy catalysts for partial oxidation of n-butane (2005)

Hävecker,Michael, Pinna,Nicola, Weiß,Klaus, Sack-Kongehl,Hilde, Jentoft,Rolf E., Wang,Di, ...

We studied unsupported VxOy nanoparticles prepared by a novel non-aqueous route in the selective oxidation of n-butane to maleic anhydride. The evolution of the electronic and geometric structure of...

Assembly of carbon tube-in-tube nanostructures (2005)

Su, Dang Sheng, Zhu, Zhenping, Liu, X., Weinberg, Gisela, Wang, N., Schlögl, Robert

Tube-in-tube carbon nanostructures were prepared by reorganization of graphitic impurity nanoparticles outside or inside of the pristine carbon nanotubes. Graphitic impurity nanoparticles were first...

Synthesis and functional verification of the unsupported active phase of VxOy catalysts for partial oxidation of n-butane (2005)

Hävecker, Michael, Pinna, Nicola, Weiß, Klaus, Sack-Kongehl, Hilde, Jentoft, Rolf E., Wang, Di, ...

We studied unsupported VxOy nanoparticles prepared by a novel non-aqueous route in the selective oxidation of n-butane to maleic anhydride. The evolution of the electronic and geometric structure of...

Investigation of the structure / activity relationship of VOx nanoparticles (B2) (2004)

Hävecker, Michael, Pinna, Nicola, Zhu, Zhen Ping, Swoboda, Manfred, Kleimenov, Evgueni, Weiß, Klaus, ...

The influence of the geometric and the electronic structure on the catalytic properties has been studied. A micro reactor set-up has been developed that allows to study the reactivity of...

Structurally complex molybdenum oxide model catalysts for the selective oxidation of propene (2003)

Abd Hamid,Sharifa Bee, Othman,Nur Diana, Abdullah,Norli Binti, Timpe,Olaf, Knobl,Stefan, Niemeyer,Dirk, ...

Controlling the precipitation of molybdenum oxide in aqueous solution is a method to arrive at structurally complex solids suitable as model catalysts for selective oxidation studies. Defect...

Theoretical and experimental study of the dynamical response of Ag (2003)

Schöne,Wolf-Dieter, Su,Dang Sheng, Ekardt,Walter

In this paper we present theoretical and experimental results for the linear electronic response of Ag. The calculations are performed within time-dependent density-functional theory. They are based...

Synthesis and characterization of the titanium doped nanostructural V2O5 (2003)

Kryukova,Galina N., Zenkovets,Galina A., Pfänder,Norbert, Su,Dang Sheng, Schlögl,Robert

Using scanning and analytical transmission electron microscopies (TEM), the morphology and structure of nanostructurally assembled V2O5 doped with Ti has been studied. It was found that the bulk...

In situ surface analysis in selective oxidation catalysis: n-Butane conversion over VPP (2003)

Bluhm,Hendrik, Hävecker,Michael, Kleimenov,Evgueni, Knop-Gericke,Axel, Liskowski,Andrzej, Schlögl,Robert, ...

In-situ analysis of the surface of a working selective oxidation catalyst is an essential yet rarely conducted experiment in attempts to derive structure-function relationships. The case study of...

In Situ Investigation of the nature of the active surface of a vanadyl pyrophosphate catalyst during the n-butane oxidation to maleic anhydride (2003)

Hävecker,Michael, Mayer,Ralf W., Knop-Gericke,Axel, Bluhm,Hendrik, Kleimenov,Evgueni, Liskowski,Andrzej, ...

In situ X-ray absorption spectroscopy (XAS) and in situ X-ray photoelectron spectroscopy (XPS) have been applied to study the active surface of vanadium phosphorus oxide (VPO) catalysts in the course...

Dieselruß: Mikrostruktur und Oxidationskinetik (2003)

Jacob,Eberhard, Rothe,Dieter, Schlögl,Robert, Su,Dang Sheng, Müller,Jens-O., Nießner,Reinhard, ...

The engine internal emission reduction of commercial vehicles has been very im-pressive during the last ten years. The mass related reduction of the soot emission is a result of the reduced number of...

Synthesis and characterization of the titanium doped nanostructural V2O5 (2003)

Kryukova, Galina N., Zenkovets, Galina A., Pfänder, Norbert, Su, Dang Sheng, Schlögl, Robert

Using scanning and analytical transmission electron microscopies (TEM), the morphology and structure of nanostructurally assembled V2O5 doped with Ti has been studied. It was found that the bulk...

In situ surface analysis in selective oxidation catalysis: n-Butane conversion over VPP (2003)

Bluhm, Hendrik, Hävecker, Michael, Kleimenov, Evgueni, Knop-Gericke, Axel, Liskowski, Andrzej, Schlögl, Robert, ...

In-situ analysis of the surface of a working selective oxidation catalyst is an essential yet rarely conducted experiment in attempts to derive structure-function relationships. The case study of...

In Situ Investigation of the nature of the active surface of a vanadyl pyrophosphate catalyst during the n-butane oxidation to maleic anhydride (2003)

Hävecker, Michael, Mayer, Ralf W., Knop-Gericke, Axel, Bluhm, Hendrik, Kleimenov, Evgueni, Liskowski, Andrzej, ...

In situ X-ray absorption spectroscopy (XAS) and in situ X-ray photoelectron spectroscopy (XPS) have been applied to study the active surface of vanadium phosphorus oxide (VPO) catalysts in the course...

Dieselruß: Mikrostruktur und Oxidationskinetik (2003)

Jacob, Eberhard, Rothe, Dieter, Schlögl, Robert, Su, Dang Sheng, Müller, Jens-Oliver, Nießner, Reinhard, ...

The engine internal emission reduction of commercial vehicles has been very im-pressive during the last ten years. The mass related reduction of the soot emission is a result of the reduced number of...

Structurally complex molybdenum oxide model catalysts for the selective oxidation of propene (2003)

Abd Hamid, Sharifah Bee, Othman, Nur Diana, Abdullah, Norli Binti, Timpe, Olaf, Knobl, Stefan, Niemeyer, Dirk, ...

Controlling the precipitation of molybdenum oxide in aqueous solution is a method to arrive at structurally complex solids suitable as model catalysts for selective oxidation studies. Defect...

Transmission Electron Microscopy investigation on the defect structures of molybdenum oxides (2003)

Su, Dang Sheng, Wang, Di, Schlögl, Robert

The identification of the two molybdenum sub-oxides, Mo18O52 and Mo8O23, derived from MoO3 by crystallographic shearing (CS), by means of transmission electron microscopy (TEM). The CS structure...

Theoretical and experimental study of the dynamical response of Ag (2003)

Schöne, Wolf-Dieter, Su, Dang Sheng, Ekardt, Walter

In this paper we present theoretical and experimental results for the linear electronic response of Ag. The calculations are performed within time-dependent density-functional theory. They are based...

The structure of thin zirconia films obtained by self-assembled monolayer mediated deposition: TEM and HREM study (2002)

Roddatis,Vladimir V., Su,Dang Sheng, Beckmann,Erich, Jentoft,Friederike C., Braun,Ulrike, Kröhnert,Jutta, ...

Transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS) and energy dispersive X-ray analysis (EDX) have been performed on thin zirconia films produced by means of...

Temperature- and electron-beam-induced crystallization of zirconia thin films deposited from an aqueous medium: a transmission electron microscopy study (2002)

Roddatis,Vladimir. V., Su,Dang Sheng, Jentoft,Friederike C., Schlögl,Robert

Thin zirconia films prepared by self-assembled monolayer (SAM) mediated deposition from aqueous medium was investigated by transmission electron microscopy (TEM) and electron-energy loss spectroscopy...

The structure of thin zirconia films obtained by self-assembled monolayer mediated deposition: TEM and HREM study (2002)

Roddatis, Vladimir V., Su, Dang Sheng, Beckmann, Erich, Jentoft, Friederike C., Braun, Ulrike, Kröhnert, Jutta, ...

Transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS) and energy dispersive X-ray analysis (EDX) have been performed on thin zirconia films produced by means of...

Temperature- and electron-beam-induced crystallization of zirconia thin films deposited from an aqueous medium: a transmission electron microscopy study (2002)

Roddatis, Vladimir. V., Su, Dang Sheng, Jentoft, Friederike C., Schlögl, Robert

Thin zirconia films prepared by self-assembled monolayer (SAM) mediated deposition from aqueous medium was investigated by transmission electron microscopy (TEM) and electron-energy loss spectroscopy...

Transmission electron microscopical studies of the layered structure of the ternary semiconductor CuIn5Se8 (2001)

Tham,Anh Tuan, Su,Dang Sheng, Neumann,Wolfgang, Schubert-Bischoff,Peter, Beilharz,C., Benz,K. W.

The structure of the off-stoichiometric In-rich ternary phase CuIn5Se8 was studied by means of electron diffraction and high-resolution electron microscopy. The compound shows a layered structure...

Transmission electron microscopical studies of the layered structure of the ternary semiconductor CuIn5Se8 (2001)

Tham, Anh Tuan, Su, Dang Sheng, Neumann, Wolfgang, Schubert-Bischoff, Peter, Beilharz, C., Benz, K. W.

The structure of the off-stoichiometric In-rich ternary phase CuIn5Se8 was studied by means of electron diffraction and high-resolution electron microscopy. The compound shows a layered structure...

Investigation of the structure / activity relationship of VOx nanoparticles (B2)

Hävecker,Michael, Pinna,Nicola, Zhu,Zhen Ping, Swoboda,Manfred, Kleimenov,Evgueni, Weiß,Klaus, ...

The influence of the geometric and the electronic structure on the catalytic properties has been studied. A micro reactor set-up has been developed that allows to study the reactivity of...

Tribochemical Modification of Bi-promoted VPP Catalysts

Su, Dang Sheng

Ball milling of V2O5 and VPP has been reported as an effective, alternative method for the preparation and activation of catalysts for selective oxidation reactions. Recently, in searching the...

Diesel Soot Particles: A Morphological Study

Su, Dang Sheng

Fine soot particles in exhausts of diesel engines are, according to the actual knowledge, toxicologistically dubious so that in the European Community the highest limit for the particle emission in...

Rationalisation of the Synthesis Process for MoVTeNb Oxides

Timpe, Olaf, Knobl, Stefan, Niemeyer, Dirk, Wagner, Jakob, Su, Dang Sheng, Mohd Salim, Rozlisa, ...

There is a growing effort in Malaysia to develop a novel catalyst material that converts the vast natural resources of palm oil into higher valued oleochemicals through selective oxidation....

Controlled precipitation of nanostructured Molybdenum oxides for selective oxidation reactions

Timpe, Olaf, Knobl, Stefan, Niemeyer, Dirk, Wagner, Jakob, Su, Dang Sheng, Abd Hamid, Sharifah Bee, ...

The selective oxidation of small organic molecules is performed over oxide catalysts comprising the elements Mo, V, Te, Nb and W as essential ingredients. It is commonly accepted that highly specific...

Molybdenum Oxides for Propene Oxidation

Wagner, Jakob, Su, Dang Sheng, Knobl, Stefan, Timpe, Olaf, Niemeyer, Dirk, Othman, Diana, ...

The industrial and economic relevance of research in selective partial oxidation catalysts are clear as about one quarter of all organic products produced worldwide are synthesized via catalytic...

From Microporous Regular Frameworks to Mesoporous Materials with Ultrahigh Surface Area: Dynamic Reorganization of Porous Polymer Networks

Kuhn, Pierre, Forget, Aurélien, Su, Dang Sheng, Thomas, Arne, Antonietti, Markus

High surface area organic materials featuring both micro- and mesopores were synthesized under ionothermal conditions via the formation of polyaryltriazine networks. While the polytrimerization of...

Nitrogen-functionalized carbon nanotubes as a basic catalyst for biomass conversion reactions

Tessonnier, Jean-Philippe, Villa, Alberto, Majoulet, Olivier, Su, Dang Sheng, Schlögl, Robert

Biomass conversion to transportation fuels and chemicals is a growing field of research due to the depletion of fossil fuels feedstock. New catalysts, optimized for carbohydrates conversion, need to...

N-functionalized carbon nanotubes as solid basic catalysts for biomass conversion

Villa, Alberto, Tessonnier, Jean-Philippe, Majoulet, Olivier, Su, Dang Sheng, Schlögl, Robert

In the view of declining fossil fuel energy resources and rising oil prices, it is necessary to develop new ways to satisfy the energy needs and the production of chemicals. An alternative route is...

The structure and mechanistic impact of carbon deposits in dehydrogenation reactions

McGregor, James, Zeitler, J. Axel, Parrott, Edward P. J., Gladden, Lynn F., Tessonnier, Jean-Philippe, Hansen, Thomas W., ...

The catalytic dehydrogenation (DH) and oxidative dehydrogenation (ODH) of light alkanes is widely studied as a route to the formation of alkenes and di-alkenes, important precursor molecules for...

The role and structure of carbonaceous materials in dehydrogenation reactions

McGregor, James, Zeitler, J. Axel, Parrott, Edward P. J., Gladden, Lynn F., Tessonnier, Jean-Philippe, Hansen, Thomas W., ...

The catalytic dehydrogenation (DH) and oxidative dehydrogenation (ODH) of light alkanes is widely studied as a route to the formation of alkenes and di-alkenes, important precursor molecules for...

Selective deposition of metal nanoparticles inside or outside carbon nanotubes

Tessonnier, Jean-Philippe, Ersen, O., Weinberg, Gisela, Cuong, Pham-Huu, Su, Dang Sheng, Schlögl, Robert

Selective, localized deposition of metal nanoparticles inside or outside carbon nanotubes (CNTs) without any asymmetric functionalization is presented. The method is only based on the difference of...