Phenol degradation on Pr6O11 surface under UV-A light. Synergistic photocatalysis by semiconductors

被引：17
作者：
Karunakaran, C. [1 ]
Dhanalakshmi, R. [1 ]
机构：
[1] Annamalai Univ, Dept Chem, Annamalainagar 608002, Tamil Nadu, India
来源：
RADIATION PHYSICS AND CHEMISTRY | 2009年 / 78卷 / 01期
关键词：
Insulator; Semiconductor; Interparticle hole-transfer; Photocatalysis; ELECTRON-TRANSFER; VISIBLE-LIGHT; PHOTOOXIDATION; PENTACHLOROPHENOL; PHOTODEGRADATION; 4-CHLOROPHENOL; OXIDATION; TITANIA; OXIDE;
D O I：
10.1016/j.radphyschem.2008.08.001
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：
Phenol degrades on the surface of Pr6O11, an insulator, under UV-A light and the degradation rate increases linearly with phenol concentration and photon flux but decreases linearly with pH. The degradation efficiency is higher with UV-C light than with UV-A light. While TiO2. Fe2O3, CuO, ZnO, ZnS, Nb2O5 and CdO particles individually photocatalyze the degradation each semiconductor exhibits synergistic effect, an enhanced photodegradation, when present along with Pr6O11 suggesting holetransfer from illuminated semiconductors to phenol adsorbed on Pr6O11 during collision. (C) 2008 Elsevier Ltd. All rights reserved.
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页码：8 / 12
页数：5
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