Formation of gold nanoparticles in zeolites

Abstract

The formation of gold nanoparticles in mordenites has been studied by the methods of FTIR spectroscopy of adsorbed CO and diffuse reflectance UV-visible spectroscopy. Different states of ionic and metallic gold were detected in the zeolite cavities and on the external surface of the zeolite - Au⁺ and Au³⁺ ions, charged clusters Au_n^δ+, and neutral nanoparticles Au_m. The relative amount of these states depends on the method of sample preparation, type of redox treatment and the SiO₂/Al₂O₃ molar ratio.

Original language	English
Pages (from-to)	2321-2326
Number of pages	6
Journal	International Journal of Modern Physics B
Volume	19
Issue number	15-17
DOIs	https://doi.org/10.1142/S0217979205030918
Publication status	Published - 10 Jul 2005

Keywords

FTIR
Gold catalysts
Nanoparticles
UV-visible spectroscopy
Zeolites

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
Statistical and Nonlinear Physics
Mathematical Physics

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10.1142/S0217979205030918

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Pestryakov, A., Tuzovskaya, I., Smolentseva, E., Bogdanchikova, N., Jentoft, F. C., & Knop-Gericke, A. (2005). Formation of gold nanoparticles in zeolites. International Journal of Modern Physics B, 19(15-17), 2321-2326. https://doi.org/10.1142/S0217979205030918

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abstract = "The formation of gold nanoparticles in mordenites has been studied by the methods of FTIR spectroscopy of adsorbed CO and diffuse reflectance UV-visible spectroscopy. Different states of ionic and metallic gold were detected in the zeolite cavities and on the external surface of the zeolite - Au+ and Au3+ ions, charged clusters Aunδ+, and neutral nanoparticles Aum. The relative amount of these states depends on the method of sample preparation, type of redox treatment and the SiO2/Al2O3 molar ratio.",

keywords = "FTIR, Gold catalysts, Nanoparticles, UV-visible spectroscopy, Zeolites",

author = "A. Pestryakov and I. Tuzovskaya and E. Smolentseva and N. Bogdanchikova and Jentoft, {F. C.} and A. Knop-Gericke",

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T1 - Formation of gold nanoparticles in zeolites

AU - Pestryakov, A.

AU - Tuzovskaya, I.

AU - Smolentseva, E.

AU - Bogdanchikova, N.

AU - Jentoft, F. C.

AU - Knop-Gericke, A.

PY - 2005/7/10

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KW - FTIR

KW - Gold catalysts

KW - Nanoparticles

KW - UV-visible spectroscopy

KW - Zeolites

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