Catalytically active gold clusters and nanoparticles for CO oxidation

A. N. Pestryakov, N. Bogdanchikova, A. Simakov, I. Tuzovskaya, F. Jentoft, M. Farias, A. Díaz

Результат исследований: Материалы для журналаСтатья

41 Цитирования (Scopus)

Аннотация

Electronic states of gold nanoparticles in mordenite and their transformations under redox treatments have 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 channels and on the external surface of the zeolite - Au+ and Au3+ ions, charged clusters Aunδ +, and neutral nanoparticles Aum. Catalytic tests of the samples revealed the existence of two types of active sites of gold in CO oxidation - gold clusters <2 nm (low-temperature activity) and gold nanoparticles (high temperature activity).

Язык оригиналаАнглийский
Страницы (с-по)3792-3795
Число страниц4
ЖурналSurface Science
Том601
Номер выпуска18
DOI
СостояниеОпубликовано - 15 сен 2007

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Цитировать

Pestryakov, A. N., Bogdanchikova, N., Simakov, A., Tuzovskaya, I., Jentoft, F., Farias, M., & Díaz, A. (2007). Catalytically active gold clusters and nanoparticles for CO oxidation. Surface Science, 601(18), 3792-3795. https://doi.org/10.1016/j.susc.2007.04.012