AgIO3-modified AgI/TiO2 composites for photocatalytic degradation of p-chlorophenol under visible light irradiation
作者： Shuang Song , Fangyue Hong , Zhiqiao He , Qiaolan Cai , Jianmeng Chen
DOI: 10.1016/J.JCIS.2012.04.020
关键词:
摘要: Abstract Semiconducting silver iodate (AgIO3) was used to modify the visible light response of an AgI/TiO2 (AIT) catalyst by a facile method. The uncalcined AIT (AITun) and calcined at 200 °C (AIT200) consisted AgIO3, AgI, TiO2 semiconductors, while that 450 °C (AIT450) composed AgI TiO2. activity in p-chlorophenol (PCP) degradation under irradiation using either AITun or AIT200 much higher than with AIT450, which mainly attributed fact presence AgIO3 provided new matching band potential. exhibited better photocatalytic properties due its crystallinity after calcination. Moreover, high catalytic maintained five successive cyclic experiments irradiation. Considering effect radical scavengers N2 purging on photocatalysis process, we deduced probable pathway PCP surface charge caused valence holes.
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