文献类型：期刊文献

英文题名：Construction of zinc-oxygen double vacancies BiOCl/ZnS Z-scheme heterojunction and photocatalytic degradation of norfloxacin

作者：Zhang, Wujian[1];Huang, Zhiling[2];Zhang, Lianyang[3];Meng, Yue[2];Ni, Zheming[1];Tang, Haodong[1];Xia, Shengjie[1]

机构：[1]Zhejiang Univ Technol, Coll Chem Engn, 1 Gongda Rd,Wukang St, Huzhou 313205, Deqing, Peoples R China;[2]Huzhou Coll, Sch Life & Hlth Sci, Dept Pharmaceut Engn, Huzhou 313000, Peoples R China;[3]Shaoxing Univ, Coll Text & Fash, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing 312000, Zhejiang, Peoples R China

年份：2023

卷号：11

期号：3

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001042732000001)、、EI(收录号：20231714007231)、Scopus(收录号：2-s2.0-85153261041)、WOS

基金：This work is supported by National Natural Science Foundation of China (22278371, 21776257) and Zhejiang Public Welfare Technology Research Project (LGC20B050008) .

语种：英文

外文关键词：Defect (vacancy); Z-scheme heterojunction; Photodegradation; Norfloxacin; Synergistic effect

外文摘要：Defect (vacancy) engineering can modulate the catalyst surface atoms and electrons, which is a low-cost and effective modification strategy for Z-scheme heterojunction. In this paper, metal and non-metal double vacancies (VZn+O) Z-scheme heterojunction photocatalysts (BiOCl/ZnS- VZn+O) were synthesized for the degradation of norfloxacin (NOR) for the first time. The results show that the built-in electric field of BiOCl/ZnS- VZn+O catalyst induces the directional migration of photogenerated carriers, which greatly improves the carrier migration and separation efficiency. The introduced nonmetallic (O) vacancies can lower the conduction band of BiOCl, while the metallic (Zn) vacancies can enhance the valence band of ZnS. Due to the synergistic efficiency formed by the double vacancies and Z-scheme heterojunction, BiOCl/ZnS- VZn+O showed excellent performance in photodegradation of NOR (97.9% degradation rate of 20 mg/L NOR in 50 min photodegradation). In addition, the mechanism of action, intermediates and degradation pathways of photodegradation were discussed in detail.