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银纳米线/二氧化钛核壳结构的制备及可见光光催化性能

Nan MU,Yangai LIU,Zhuang HUI,Xinwen ZHOU,Wei GUO,Chao JIN,Peng PENG

Journal of the Chinese Ceramic Society（2020）

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Abstract
以有机染料罗丹明B为目标降解物,采用水热法制备了不同负载比例的银纳米线(Ag NW)@TiO2核壳复合结构光催化剂,评价其可见光催化活性.结果表明:核壳结构经煅烧后为Ag NWs和锐钛矿型TiO2,TiO2带隙减小可实现可见光范围内的激发.当TiO2与Ag NWs的摩尔比为84％时,光催化活性最高,对罗丹明B的降解率可达82.2％,主要活性氧化物为超氧自由基.该结构稳定性强,放置263 d后无氧化和相变发生.
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