文献类型：期刊文献

英文题名：Br doping promotes the transform of Cu2O (100) to Cu2O (111) and facilitates efficient photocatalytic degradation of tetracycline

作者：Zhang, Lianyang[1];Meng, Yue[2];Xie, Bo[3];Ni, Zheming[3];Xia, Shengjie[3]

机构：[1]Shaoxing Univ, Coll Text & Fash, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing, Zhejiang, Peoples R China;[2]Huzhou Coll, Sch Life & Hlth Sci, Dept Pharmaceut Engn, Huzhou 313000, Peoples R China;[3]Zhejiang Univ Technol, Coll Chem Engn, Dept Chem, 18 Chaowang Rd, Hangzhou 310014, Peoples R China

年份：2023

卷号：548

外文期刊名：MOLECULAR CATALYSIS

收录：SCI-EXPANDED(收录号：WOS:001050432000001)、、EI(收录号：20233114481433)、Scopus(收录号：2-s2.0-85166329856)、WOS

基金：This work is supported by National Natural Science Foundation of China (22278371, 92061126, 51871091) , Zhejiang Public Welfare Technology Research Project (LGC20B050008) and Huzhou Municipal Science and Technology Foundation (2022GZ48) .

语种：英文

外文关键词：Photocatalytic degradation; Br doping; Tetracycline; Facet engineering; Cu2O

外文摘要：The activity of single-crystal catalysts with different crystal faces varies greatly, and the construction of catalysts with highly exposed active facets is essential for the improvement of photocatalytic performance. In this paper, Cu2O (100) crystal facets were transformed into high degrade-active Cu2O (111) crystal facets by doping with halogen atoms Br for the photocatalytic degradation of tetracycline. The effect of the optimal Br/Cu2O ratio on the degradation activity was investigated by adjusting the amount of Br. Meanwhile, based on photocatalytic degradation performance tests, photoelectric performance characterization and theoretical calculations, it was found that the doped Br-Cu2O introduced impurity energy levels, reduced the band gap, broadened the absorption range of the photocatalyst under visible light, and enhanced the oxidation capacity and the rate of photogenerated electron leap. In addition, the highly active Cu2O (111) crystal surface facilitates the adsorption of oxygen to generate superoxide radicals and promote the photocatalytic reaction. The synergistic effect of these two aspects promotes the efficient degradation of tetracycline by Br-Cu2O. This work provides a promising idea for the design and construction of highly efficient active surface highly exposed photocatalysts.