Photocatalytic Redox Performance of Copper Doped TiO2 Photocatalyst

doi:10.7517/j.issn.1674-0475.2005.05.333

Abstract

Abstract: Copper doped titanium dioxide was prepared by impregnation of TiO₂ materials with aqueous solution of Cu(NO₃)₂ under ultrasonic irradiation, followed by calcinations at 450 ℃. The catalysts were characterized by X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The photocatalytic activity of the doped catalysts were evaluated using the reaction of photocatalytic oxidation of acetic and photocatalytic reduction of CO₂. The results show that the photocatalytic activity can be significantly improved by doping copper. The raised content of adsorbed oxygen and coexistence of Cu²⁺ and Cu⁺ are likely to be two of the reasons responsible for the improved photocatalytic activity.

Key words: photocatalytic, acetic acid, copper ion doping, XPS, TiO₂, CO₂ reduction

CLC Number:

WU Shu-xin, YIN Yan-hua, HE Fei, QIN Yong-ning. Photocatalytic Redox Performance of Copper Doped TiO₂ Photocatalyst[J]. Imaging Science and Photochemistry, 2005, 23(5): 333-339.

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Photocatalytic Redox Performance of Copper Doped TiO₂ Photocatalyst

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