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Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Sc, Ti, V, Cu and Zn

Size- and support-dependency in the catalysis of gold

[Xie, Xiaowei; Li, Yong; Shen, Wenjie] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China. [Liu, Zhi-Quan] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China. [Haruta, Masatake] Tokyo Metropolitan Univ, Grad Sch Urban Environm Sci, Dept Appl Chem, Tokyo 1920397, Japan. [Haruta, Masatake] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan.;Shen, WJ (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China;shen98@dicp.ac.cn

Low-temperature oxidation of CO catalysed by Co 3 O 4 nanorods

The surface and materials science of tin oxide

Advances in the development of novel cobalt Fischer-Tropsch catalysts for synthesis of long-chain hydrocarbons and clean fuels.

Electron energy-loss spectra (ELS) have been obtained from polycrystalline Ag metal, AgO powder, and ${\mathrm{Ag}}_{2}\mathrm{O}$ powder using primary electron-beam energies ranging from 100 to 2000 eV. These samples were characterized using x-ray photoelectron spectroscopy (XPS) to determine the compositions and chemical species in their near-surface regions. The ELS spectra obtained from these three materials are significantly different, implying that ELS is a useful technique for distinguishing between Ag metal, AgO, and ${\mathrm{Ag}}_{2}\mathrm{O}$ or analyzing mixtures of these species. Such an analysis is difficult using techniques including XPS or Auger-electron spectroscopy because spectral features of these species are quite similar and closely spaced. The ELS spectral features consist of losses due to the formation of surface and bulk plasmons and interband transitions. An attempt has been made in this study to assign the processes responsible for the ELS features observed in the spectra. This interpretation will be improved as the electronic structures of Ag metal, AgO, and ${\mathrm{Ag}}_{2}\mathrm{O}$ are better understood.

Surface characterization study of Ag, AgO, and Ag 2 O using x-ray photoelectron spectroscopy and electron energy-loss spectroscopy

The changes in chemical states and composition of the surface region of a Ag2CO3 powder at various stages during thermal decomposition have been examined using X-ray photoelectron spectroscopy (XPS...

Surface characterization study of the thermal decomposition of ago

Au/α-Fe2O3 and Au/Co3O4 catalysts prepared by coprecipitation with a nominal 10 atom % Au are active for CO oxidation even at temperatures below 0 °C. The surfaces of these as-prepared, powdered ca...

Gar B. Hoflund

Papers

Surface characterization study of Ag, AgO, and Ag 2 O using x-ray photoelectron spectroscopy and electron energy-loss spectroscopy

Surface characterization study of the thermal decomposition of ago

Surface Characterization Study of Au/α-Fe2O3 and Au/Co3O4 Low-Temperature CO Oxidation Catalysts

Comparison of the performance characteristics of Pt/SnOx and Au/MnOx catalysts for low-temperature CO oxidation

Electron energy loss spectroscopic investigation of Co metal, CoO, and Co3O4 before and after Ar+ bombardment