Journal ArticleDOI
The influence of the preparation methods on the catalytic activity of platinum and gold supported on TiO2 for CO oxidation
TLDR
The influence of the preparation methods on the catalytic activity for CO oxidation was markedly large for Au-TiO2 and negligible for Pt- TiO2 catalysts as discussed by the authors, and the most active catalysts for both Pt and Au were prepared by deposition-precipitation (DP), photodeposition (FD), and impregnation (IMP).Abstract:
The influence of the preparation methods on the catalytic activity for CO oxidation was markedly large for Au-TiO2 and negligible for Pt-TiO2 catalysts. Platinum and gold were deposited on TiO2 by deposition-precipitation (DP), photodeposition (FD) and impregnation (IMP). The DP method gave the most active catalysts for both Pt and Au. Gold catalysts prepared by DP were active at temperatures below 273 K and showed a much greater activity than Pt catalysts.read more
Citations
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Journal ArticleDOI
Onset of Catalytic Activity of Gold Clusters on Titania with the Appearance of Nonmetallic Properties
Mika Valden,X. Lai,D. W. Goodman +2 more
TL;DR: Results suggest that supported clusters, in general, may have unusual catalytic properties as one dimension of the cluster becomes smaller than three atomic spacings.
Journal ArticleDOI
Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles.
Lichen Liu,Avelino Corma +1 more
TL;DR: This Review will compare the results obtained from different systems and try to give a picture on how different types of metal species work in different reactions and give perspectives on the future directions toward better understanding of the catalytic behavior of different metal entities in a unifying manner.
Journal ArticleDOI
On the origin of the catalytic activity of gold nanoparticles for low-temperature CO oxidation
Núria López,Ton V. W. Janssens,Clausen Bjerne Steffen,Ye Xu,Manos Mavrikakis,Thomas Bligaard,Jens K. Nørskov +6 more
TL;DR: In this paper, it is suggested that there may be several effects contributing to the catalytic properties of supported nanosized gold particles, and that it is useful to order them in a hierarchy.
Journal ArticleDOI
Selective Vapor-Phase Epoxidation of Propylene over Au/TiO2Catalysts in the Presence of Oxygen and Hydrogen
TL;DR: In this article, it was shown that propylene adsorbed on a gold surface may react with oxygen species formed at the perimeter interface between the gold particles and the TiO2support through the reaction of oxygen with hydrogen.
Journal ArticleDOI
Catalysis of Gold Nanoparticles Deposited on Metal Oxides
TL;DR: The catalytic performance of Au nanoparticles is defined by three major factors: contact structure, support selection, and particle size, the first being the most important because the perimeter interfaces around Au particles act as the site for reaction as discussed by the authors.
References
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Journal ArticleDOI
Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide
TL;DR: In this paper, gold catalysts were prepared by coprecipitation from an aqueous solution of HAuCl4 and the nitrates of various transition metals, including Auα-Fe2O3, AuCo3O4, and AuNiO.
Journal ArticleDOI
Low-Temperature Oxidation of CO over Gold Supported on TiO2, α-Fe2O3, and Co3O4
TL;DR: In this paper, the authors proposed a mechanism in which CO adsorbed on gold particles migrates toward the perimeter on support oxides and there it reacts with oxygen to form bidentate carbonate species.
Journal ArticleDOI
Photoassisted hydrogen production from a water-ethanol solution: a comparison of activities of AuTiO2 and PtTiO2
TL;DR: A comparison of the photocatalytic activity for H 2 generation between Au and Pt was made in this paper, where the results showed that the overall activity of Au samples was generally about 30% lower than that of Pt samples.
Journal ArticleDOI
Heterogeneous photocatalytic decomposition of saturated carboxylic acids on titanium dioxide powder. decarboxylative route to alkanes
Bernhard Kraeutler,Allen J. Bard +1 more
TL;DR: In this article, the authors investigated the photodecomposition of acetic acid on anatase powders and showed that the results were mainly methane and CO/sub 2, with small amounts of hydrogen and ethane.
Journal ArticleDOI
FTIR Study of Carbon Monoxide Oxidation and Scrambling at Room Temperature over Gold Supported on ZnO and TiO2. 2
TL;DR: In this article, an FTIR and quadrupole mass spectroscopic study of CO adsorption and oxidation with 16O2 and 18O2 on copper supported on ZnO and TiO2 is presented.
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Onset of Catalytic Activity of Gold Clusters on Titania with the Appearance of Nonmetallic Properties
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