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Photoinduced reduction of silica supported CuO during XPS irradiation

1985; Elsevier BV; Volume: 114; Issue: 1 Linguagem: Inglês

10.1016/0009-2614(85)85065-x

1873-4448

V. Di Castro, G. Piredda,

Copper-based nanomaterials and applications

The kinetics of the photoinduced decomposition of CuO supported on silica is studied by XPS. Reduction of Cu(II) to Cu(I) follows a pseudo-zero-order process and a decrease of the rate of reduction with increase of copper coverage is observed. The results are discussed in terms of a proposed excited mechanism involving Cu sites directly bonded to the support surface.