Huang Qiaoyun
2012
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Journal
Environmental Chemistry
Abstract
PbMoO4 microcrystals were prepared through a hydrothermal process and used for the photocatalytic degradation of chlorbenzuron.The kinetics and mechanism of the degradation reaction were investigated.The experimental results indicate that the optimum condition was observed at the pH of 6.0,the initial chlorbenzuron concentration of 20 mg·L-1,and the catalyst dosage of 0.4 g·L-1.The degradation rate reached 99.96% after 4 h irradiation and the TOC removal achieved 66.4%.The reaction kinetics could be described by a first-order process.It was demonstrated by addition of scavengers that the valence band holes and hydroxyl radicals played a significant part in the degradation of chlorbenzuron,in which the hole acted a dominant role.