光伏实验室
 首页  实验室概况  研究领域  科研队伍  科研成果  合作交流  科技动态  仪器平台  人才培养  英才招聘  安全宣传 
当前位置: 首页>>科技动态>>正文
文章内容页
BiOBr/NaBiO3异质结高效光催化氯酚类-新加坡研究
2017-09-14 17:15   审核人:

Efficient photodegradation of chlorophenols by BiOBr/NaBiO3 heterojunctioned composites under visible light

Journal of Hazardous Materials 341(2018) 83-92

Aijuan Han, Hongwei Zhang, Di Lu, Jiulong Sun, Gaik Khuan Chuah, Stephan Jaenicke

Forming heterojunctioned composites is an effective way to develop visible-light-driven photocatalysts. A series of BiOBr/NaBiO3 composites were synthesized by surface transformation of NaBiO3 with hydrobromic acid. Commensurate planes of BiOBr and NaBiO3 enabled the formation of a closely bound interface. Composites with <20wt.% BiOBr exhibited excellent photocatalytic activity towards the degradation of chlorophenols under low intensity visible light (λ>400nm). The best photocatalyst was 9% BiOBr/NaBiO3 with a quantum yield of 0.365. No photocorrosion was observed after three cycles. Using radical scavengers and inert atmosphere, holes, superoxide and hydroxyl radicals were found to be involved in the photoactivity of the BiOBr/NaBiO3 composite. Hydroxylated and open-ring diacid molecules were identified as intermediates in the mineralization of 4-chlorophenol.

河南大学光伏材料省重点实验室 版权所有©2017 地址:中国 河南开封,金明大道

邮编:475004   电话:0371-23880659