Journal ArticleDOI
Effect of treatments on gold nanoparticles: Relation between morphology, electron structure and catalytic activity in CO oxidation
Reads0
Chats0
TLDR
In this paper, the morphology, electron structure and catalytic activity in CO oxidation of the following samples were compared: an Au/FeO x /SiO 2 /Si(1.0) model sample fabricated by pulsed laser deposition (AuPLD), an Au 2 O 3 sample prepared by co-precipitation (auCP), and an Au-Fe/HY sample.About:
This article is published in Catalysis Today.The article was published on 2002-02-15. It has received 90 citations till now. The article focuses on the topics: Oxygen & Iron oxide.read more
Citations
More filters
Journal ArticleDOI
Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology.
TL;DR: A review of gold nanoparticles can be found in this article, where the most stable metal nanoparticles, called gold colloids (AuNPs), have been used for catalysis and biology applications.
Journal ArticleDOI
Surface chemistry of catalysis by gold
Journal ArticleDOI
Platinum-Maghemite Core−Shell Nanoparticles Using a Sequential Synthesis
TL;DR: Pt@Fe2O3 core−shell nanoparticles have been made using a sequential synthetic method as discussed by the authors, and they have been characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, and Xray photo-emission spectroscopy.
Journal ArticleDOI
FTIR study of low-temperature water-gas shift reaction on gold/ceria catalyst
TL;DR: In this paper, an electronic interaction between small gold metallic nanoparticles and defective ceria has been evidenced, which explains the remarkably high stability of this catalytic system at low temperature.
Journal ArticleDOI
Laser-induced shape transformation of gold nanoparticles below the melting point: the effect of surface melting.
TL;DR: Estimations based on the heat balance and surface melting model revealed that the temperature which particles reach after a single laser pulse was about 940 degrees C, with the thickness of the liquid layer on the surface of the solid core being 1.4 nm.
References
More filters
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
CO Oxidation over Supported Gold Catalysts—“Inert” and “Active” Support Materials and Their Role for the Oxygen Supply during Reaction
Markus M. Schubert,Stefan Hackenberg,Andre C. van Veen,Martin Muhler,Vojtech Plzak,R. Jürgen Behm +5 more
TL;DR: In this article, a thorough comparison of gold catalysts on different support materials as well as activity measurements for Au on mixed oxides (Au/Fe2O3·MgO) reveal enhanced CO oxidation rates for a group of active support materials (Fe 2O3, TiO2, NiOx, CoOx).
Book
Oxygen in catalysis
Adam Bielański,Jerzy Haber +1 more
TL;DR: In this article, a description of catalytic systems commonly used as model systems in the laboratory and as industrial catalysts in large-scale operations is given, as well as a discussion of the mechanisms operating in these reactions.
Journal ArticleDOI
Selective Oxidation of CO, over Supported Au Catalysts
TL;DR: In this paper, the selective oxidation of CO on Au/Al 2 O 3 and Au/MO x /Al O 3 (M=Mg, Mn) in the presence of H 2 was studied and the effect of water was also found to have a pronounced effect on the CO oxidation rate even at room temperature.
Journal ArticleDOI
Active Oxygen Species and Mechanism for Low-Temperature CO Oxidation Reaction on a TiO2-Supported Au Catalyst Prepared from Au(PPh3)(NO3) and As-Precipitated Titanium Hydroxide
Haichao Liu,Alexander I. Kozlov,Anguelina P. Kozlova,Takafumi Shido,Kiyotaka Asakura,Yasuhiro Iwasawa +5 more
TL;DR: In this paper, the active oxygen species and mechanism for catalytic CO oxidation with O2 on a highly active TiO2-supported Au catalyst (denoted as Au/Ti(OH)*4), which was prepared by supporting a Au-phophine complex on as-precipitated wet titanium hydroxide followed by calcination at 673 K, have been studied by means of oxygen isotope exchange, O2 temperature-programmed desorption (O2 TPD), electron spin resonance (ESR), and Fourier-transformed infrared spectrosc