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

Fingerprint

Electronic states
Infrared spectroscopy
Gold
Experiments
Silica
Vacuum
Ions
Metals
Temperature
Spectroscopy
Experiment
Oxidation-Reduction
Pretreatment
Charge
Infrared

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

Study of electronic state of supported gold nanospecies by IR spectroscopy. / Martynyuk, Oxana Anatolievna; Pestryakov, A.; Bogdanchikova, N.; Tiznado, H.; Zepeda, T. A.; Tuzovskaya, I.

Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012. 2012. 6357581.

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

Martynyuk, OA, Pestryakov, A, Bogdanchikova, N, Tiznado, H, Zepeda, TA & 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, 2012 7th International Forum on Strategic Technology, IFOST 2012, Tomsk, Russian Federation, 18.9.12. https://doi.org/10.1109/IFOST.2012.6357581
Martynyuk OA, Pestryakov A, Bogdanchikova N, Tiznado H, Zepeda TA, Tuzovskaya I. Study of electronic state of supported gold nanospecies by IR spectroscopy. In Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012. 2012. 6357581 https://doi.org/10.1109/IFOST.2012.6357581
Martynyuk, Oxana Anatolievna ; Pestryakov, A. ; Bogdanchikova, N. ; Tiznado, H. ; Zepeda, T. A. ; Tuzovskaya, I. / Study of electronic state of supported gold nanospecies by IR spectroscopy. Proceedings - 2012 7th International Forum on Strategic Technology, IFOST 2012. 2012.
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