Colloids with controlled dimensions, morphology and composition can be used to obtain supported metal catalysts with desired characteristics. Yet, removal of capping agents which block active metal sites in such catalysts can be challenging: mild methods often result in incomplete removal of capping agents, whereas harsher methods can cause change in particle size or morphology or cause metal s...

Inelastic neutron scattering shows formation of a surface Au-H species, of key importance for the study of catalytic mechanisms. Previous assignment of this feature in the infrared as a purely Ce(3+) transition is shown to be erroneous on reducing the catalyst using hydrogen and deuterium.

A new heterogeneous catalytic transfer hydrogenation (CTH) system, consisting of a non-flammable supported Au catalyst along with 2-propanol as the hydrogen donor, was proven to be effective for chemoselective reduction of a wide range of aromatic ketones and aldehydes to the corresponding alcohols.

The nanoporous AuPd (AuPdNPore) alloy catalyst showed superior chemoselectivity and high catalytic activity for the direct 1,4-hydrosilylation of the conjugated cyclic enones with hydrosilane in comparison with the monometallic nanoporous Au and Pd catalysts. The enhanced catalytic properties of AuPdNPore arise mainly from the nanoporous structure and the synergistic effect of the AuPd alloy.

This paper describes the investigation of electrocatalytic activity AuCeO2/C catalyst, prepared using microwave irradiation method, towards oxidation sodium borohydride and oxygen reduction reactions in an alkaline medium. It was found that obtained catalyst with Au loading electrochemically active surface area nanoparticles (AuNPs) equal to 71 µg cm−2 0.05 cm2, respectively, showed enhanced in...

A comparison between Au, TiO2 and self-catalysed growth of SnO2 nanostructures using chemical vapour deposition is reported. TiO2 enables growth of a nanonetwork of SnO2 , whereas self-catalysed growth results in nanoclusters. Using Au catalyst, single-crystalline SnO2 nanowire trees can be grown in a one-step process. Two types of trees are identified that differ in size, presence of a catalyt...

Methanobactin (Mb) is a copper-binding peptide that appears to function as an agent for copper sequestration and uptake in methanotrophs. Mb can also bind and reduce Au(III) to Au(0). In this paper, Au/Al2O3 catalysts prepared by a novel incipient wetness-Mb-mediated bioreduction method were used for glucose oxidation. The catalysts were characterized, and the analysis revealed that very small ...

The present work deals with the kinetic analysis and modelling of glycerol (GLY) oxidation in the liquid phase over a supported gold catalyst. A Langmuir-Hinshelwood model was proposed, after considering the effect of the reaction temperature, the NaOH/GLY ratio and the initial concentrations of GLY and GLY-Product mixtures. The proposed model effectively predicted the experimental results, and...

Chuanbo Li , Kouichi Usami, Gento Yamahata, Yoshishige Tsuchiya, Hiroshi Mizuta, and Shunri Oda Quantum Nanoelectronics Research Center, Tokyo Institute of Technology, Tokyo 152-8552, Japan School of Electronics and Computer Science, University of Southampton, Highfield, Southampton, Hampshire, SO17 1BJ, U.K. Department of Physical Electronics, Tokyo Institute of Technology, Tokyo 152-8552, Jap...

Density functional theory is used to determine the reaction mechanisms of CO oxidation and the active oxygen species on a Au/TiO2 model catalyst. The model consists of a Au rod supported along the TiO2 [11̅0] direction of the TiO2(110) surface. An interfacial Au/Ti5c site at the interface boundary is identified to be particularly active toward O2 adsorption and dissociation. At this site, O2 dis...