TITLE

XPS study of gold oxidation with nitrogen dioxide in model Au/C samples

AUTHOR(S)
Kalinkin, A.; Smirnov, M.; Bukhtiyarov, A.; Bukhtiyarov, V.
PUB. DATE
November 2015
SOURCE
Kinetics & Catalysis;Nov2015, Vol. 56 Issue 6, p796
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The interaction of NO with model samples obtained by the gold sputter deposition onto the surface of highly oriented pyrolytic graphite (HOPG) has been studied by X-ray photoelectron spectroscopy (XPS). It has been shown that 3D metal particles characterized by an Au4 f binding energy (BE) of 84.0 eV form on the initial smooth graphite surface. During the sputter deposition onto the surface of HOPG preliminarily activated by means of ion etching, gold atoms chemically bound to the carbon atoms form in the area of surface defects. Such atoms are characterized by a positive shift of BE(Au4 f). It has been established that the 3D particles are resistant to the action of NO under the pressure XXXXXXXX mbar at room temperature. On the contrary, atomic gold oxidizes under these conditions into Au(III) complexes bound to the graphite surface. It is assumed that gold atoms on the support surface play the role of active sites of gold catalysts in oxidation reactions.
ACCESSION #
111160394

 

Related Articles

  • Supported Gold Nanoparticles as Catalysts in Peroxidative and Aerobic Oxidation of 1-Phenylethanol under Mild Conditions. Pakrieva, Ekaterina; P. C. Ribeiro, Ana; Kolobova, Ekaterina; M. D. R. S. Martins, Luísa; A. C. Carabineiro, Sónia; German, Dmitrii; Pichugina, Daria; Jiang, Ce; J. L. Pombeiro, Armando; Bogdanchikova, Nina; Cortés Corberán, Vicente; Pestryakov, Alexey // Nanomaterials (2079-4991);Jan2020, Vol. 10 Issue 1, p151 

    The efficiency of Au/TiO2 based catalysts in 1-phenylethanol oxidation was investigated. The role of support modifiers (La2O3 or CeO2), influence of gold loading (0.5% or 4%) and redox pretreatment atmosphere, catalyst recyclability, effect of oxidant: tert-butyl hydroperoxide (TBHP) or O2, as...

  • Synthesis, characterization and photo-epoxidation performance of Au-loaded photocatalysts. NGUYEN, VAN-HUY; CHAN, HSIANG-YU; WU, JEFFREY // Journal of Chemical Sciences;Jul2013, Vol. 125 Issue 4, p859 

    Titanium silicalite-1 (TS-1) was synthesized by hydrothermal crystallization. Au-loaded TS-1 (Au/TS-1) was prepared by the photo-deposition method. The prepared photocatalysts have been fully characterized by Raman, Brunauer-Emmett-Teller (BET), transmission electron microscopy, scanning...

  • Redox Characteristics of O2 and NO2 in the Fast NH3-Selective Catalytic Reduction of NOx Over Vanadium-Based Catalyst. Kim, Sung Su; Choi, Sang Hyun; Hong, Sung Chang // Environmental Engineering Science;Oct2010, Vol. 27 Issue 10, p845 

    The redox property of catalysts in response to oxygen is one of the most important factors in selective catalytic reduction (SCR) reactions. In particular, the capacity to reoxidize V in V/TiO2 catalysts determines the reaction activity at low temperatures. Fast SCR reactions do not involve...

  • Nitrogen doping of carbon nanoballoons by radiofrequency magnetron plasma and evaluation of their oxygen reduction reaction activity. Takahashi, Ryota; Harigai, Toru; Tanimoto, Tsuyoshi; Takikawa, Hirofumi; Setaka, Toshiya; Nakamura, Junji; Suda, Yoshiyuki // Electronics & Communications in Japan;Aug2019, Vol. 102 Issue 8, p3 

    Nitrogen‐doped carbon materials exhibit a catalytic activity, such as an oxygen reduction reaction (ORR). In this study, we performed nitrogen doping on a carbon nanoballoon (CNB), which is a nanometer‐sized carbon particle in the form of a hollow sphere made of graphite by...

  • Band alignment of TiO2/FTO interface determined by X-ray photoelectron spectroscopy: Effect of annealing. Haibo Fan; Zhou Yang; Xianpei Ren; Mingli Yin; Fei Gao; Shengzhong (Frank) Liu // AIP Advances;Jan2016, Vol. 6 Issue 1, p1 

    The energy band alignment between pulsed-laser-deposited TiO2 and FTO was firstly characterized using high-resolution X-ray photoelectron spectroscopy. A valence band offset (VBO) of 0.61 eV and a conduction band offset (CBO) of 0.29 eV were obtained across the TiO2/FTO heterointerface. With...

  • Mixed silver-nickel oxide AgNiO2: Probing by CO during XPS study. Svintsitskiy, Dmitry A.; Lazarev, Mikhail K.; Kardash, Tatyana Yu.; Fedorova, Elizaveta A.; Slavinskaya, Elena M.; Boronin, Andrei I. // Journal of Chemical Physics;1/28/2020, Vol. 152 Issue 4, p1 

    In this work, the reaction properties of mixed silver-nickel oxide AgNiO2 were investigated in the reaction of CO oxidation ranging from room temperature up to 350 °C. X-ray photoelectron spectroscopy revealed the presence of a single oxidized silver state and the combination of Ni2+ and Ni3+...

  • In situ ion beam sputter deposition and X-ray photoelectron spectroscopy (XPS) of multiple thin layers under computer control for combinatorial materials synthesis. Wilson, Thomas A.; Barlow, Anders J.; Foster, Michael L.; Bravo Sanchez, Mariela; Portoles, Jose F.; Sano, Naoko; Cumpson, Peter J.; Fletcher, Ian W. // Surface & Interface Analysis: SIA;Jan2017, Vol. 49 Issue 1, p18 

    Deposition of ultra-thin layers under computer control is a frequent requirement in studies of novel sensors, materials screening, heterogeneous catalysis, the probing of band offsets near semiconductor junctions and many other applications. Often large-area samples are produced by magnetron...

  • State of manganese atoms in the NdSrMnO solid solution. Yankin, A.; Fetisov, A.; Fedorova, O.; Vedmid', L. // Glass Physics & Chemistry;Jan2013, Vol. 39 Issue 1, p73 

    The oxidation state of manganese in the NdSrMnO solid solution was determined by X-ray photoelectron spectroscopy and by calculating the oxygen nonstoichiometry based on the gravimetric data. As a result of the heterovalent replacement of Nd with Sr, the change in the oxidation state of...

  • X-Ray Photoelectron Spectroscopy Characterization of Aluminum Nitride Surface Oxides: Thermal and Hydrothermal Evolution. Dalmau, R.; Collazo, R.; Mita, S.; Sitar, Z. // Journal of Electronic Materials;Apr2007, Vol. 36 Issue 4, p414 

    Oxidized surfaces of aluminum nitride (AlN) epilayers grown on sapphire substrates and of AlN bulk crystals grown by physical vapor transport were studied by x-ray photoelectron spectroscopy (XPS). Analysis of the oxygen core level spectra showed approximately equal contributions from oxygen in...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics