Study of electronic state of supported gold nanospecies by IR spectroscopy

Oxana Anatolievna Martynyuk, A. Pestryakov, N. Bogdanchikova, H. Tiznado, T. A. Zepeda, I. Tuzovskaya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The nature of different Au species supported on hexagonal mesoporous silica has been studied by infrared spectroscopy of adsorbed CO. Experiments revealed existence of the following states of supported gold: neutral metal particles Au°, ions Au+ and a number of partly charged states Au δ+ with different effective charge. Redox pretreatments (vacuum, O2 and H2) of Au/SiO2 at the different temperatures (100, 300 and 500°C) exert a significant effect on the electronic state of supported Au species. The experiments showed high stability of Auδ+ states under all treatments; that may prove their active role in catalytic properties of gold.

Original languageEnglish
Title of host publicationProceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012
DOIs
Publication statusPublished - 2012
Event2012 7th International Forum on Strategic Technology, IFOST 2012 - Tomsk, Russian Federation
Duration: 18 Sep 201221 Sep 2012

Other

Other2012 7th International Forum on Strategic Technology, IFOST 2012
CountryRussian Federation
CityTomsk
Period18.9.1221.9.12

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Keywords

  • CO adsorbtion
  • gold catalyst
  • mesoporous silica
  • redox pretreatments

ASJC Scopus subject areas

  • Management of Technology and Innovation

Cite this

Martynyuk, O. A., Pestryakov, A., Bogdanchikova, N., Tiznado, H., Zepeda, T. A., & Tuzovskaya, I. (2012). Study of electronic state of supported gold nanospecies by IR spectroscopy. In Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012 [6357581] https://doi.org/10.1109/IFOST.2012.6357581