Study of copper nanoparticles formation on supports of different nature by UV-Vis diffuse reflectance spectroscopy

A. N. Pestryakov, V. P. Petranovskii, Andrey Nikolaevich Kryazhov, O. Ozhereliev, N. Pfänder, A. Knop-Gericke

Результат исследований: Материалы для журналаСтатья

112 Цитирования (Scopus)

Аннотация

Supported copper particles are widely used in heterogeneous catalysis. Influence of supports of different nature on the Cu particles formation is studied by the methods of UV-Vis spectroscopy of diffuse reflectance, XRD and electron microscopy. Different states of supported copper have been identified by UV-Vis spectroscopy: absorption bands at 250 (Cu+), 320-370 and 400-440 (charge transfer bands of O-Cu-O and Cu-O-Cu complexes), 520-580 (Cun plasmon resonance) and 620-850 nm (d-d transitions in Cu 2+ ions). The size of Cu clusters and Cun/Cu n δ+ ratio strongly depends on the support nature.

Язык оригиналаАнглийский
Страницы (с-по)173-176
Число страниц4
ЖурналChemical Physics Letters
Том385
Номер выпуска3-4
DOI
СостояниеОпубликовано - 9 фев 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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