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

被引：152

作者：

Pestryakov, AN

Petranovskii, VP

Kryazhov, A

Ozhereliev, O

Pfänder, N

Knop-Gericke, A

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Dept Inorgan Chem, D-14195 Berlin, Germany

[2] Ctr Ciencias Mat Condensada, Ensenada 22800, Baja California, Mexico

[3] Seversk Technol Inst, Seversk 634003, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 385卷 / 3-4期

关键词：

D O I：

10.1016/j.cplett.2003.12.077

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 (Cu, plasmon resonance) and 620-850 nm (d-d transitions in Cu2+ ions). The size of Cu clusters and Cu-n/Cu-n(delta+) ratio strongly depends on the support nature. n (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：173 / 176

页数：4

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