文献类型：期刊文献

英文题名：Z-scheme inverse opal CN/BiOBr photocatalysts for highly efficient degradation of antibiotics

作者：Chen, Bin[1];Zhou, Liang[1];Tian, Yunhao[1];Yu, Jie[1];Lei, Juying[1,2];Wang, Lingzhi[1];Liu, Yongdi[1,2];Zhang, Jinlong[3,4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2019

卷号：21

期号：24

起止页码：12818

外文期刊名：PHYSICAL CHEMISTRY CHEMICAL PHYSICS

收录：;EI(收录号：20201708549081);WOS:【SCI-EXPANDED(收录号:WOS:000472214000005)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21777044), the National Key Research and Development Program (2016YFA0204200), the China Postdoctoral Science Foundation (2015T8049), and the Fundamental Research Funds for the Central Universities (222201714061, 222201817009, 222201815006 and 222201818014).

语种：英文

外文关键词：Inverse problems - Wastewater treatment - Heterojunctions - Irradiation - Light absorption - Bismuth compounds - Light - Antibiotics - Degradation - Bromine compounds

摘要：Optimizing the heterojunction structure of semiconductor photocatalysts is vital for utilizing their abilities in organic matter degradation. Herein, a novel fabrication of a Z-scheme system with inverse opal g-C3N4 and BiOBr via a reflux process is developed. On the one hand, the unique inverse opal construction, formed by using silica (SiO2) photonic crystals as the template, not only provides a larger surface area for adsorption of antibiotics but also improves the separation and transfer efficiency of photogenerated electrons and holes as well as visible light absorption ability. On the other hand, by imitating natural photosynthesis, the artificial Z-scheme system with an inverse opal g-C3N4-BiOBr nanojunction further promotes the separation of photogenerated electrons and holes. The obtained IO CN/BiOBr catalyst exhibits superior photocatalytic performance for antibiotics degradation under visible light irradiation. In a typical test, almost complete degradation of levofloxacin (LVX) (10 mg L-1) could be achieved within 50 min due to the proper bandgap match between inverse opal g-C3N4 and BiOBr as well as enhanced surface area and light absorption. The present work provides an alternative strategy for construction of novel visible-light-driven Z-scheme photocatalysts and offers some new insights into the methods of waste water treatment.