Z-scheme Bi_(4)O_(5)Br_(2)/NH_(2)-MIL-125(Ti)heterojunctions enable exceptional visible photocatalytic degradation of organic pollutant  

作　　者：Feng Huang Muhammad Humayun Gang Li Ting-Ting Fan Wen-Lin Wang Yu-Lin Cao Anton Nikiforov Chun-Dong Wang Jing Wang 

机构地区：[1]Key Laboratory of Analytical Science and Technology of Hebei Province,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education,State Key Laboratory of New Pharmaceutical Preparations and Excipients,College of Chemistry and Materials Science,Hebei University,Baoding071002,China [2]Energy,Water and Environment Lab,College of Humanities and Sciences,Prince Sultan University,11586 Riyadh,Saudi Arabia [3]Baoding Green Yijia Environmental Protection Technology Ltd,Baoding 071051,China [4]Physics Laboratory,Industrial Training Center,Shenzhen Polytechnic University,Shenzhen 518055,China [5]Department of Applied Physics,Ghent University,9000 Ghent,Belgium [6]School of Integrated Circuits,Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Rare Metals》2024年第7期3161-3172,共12页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51302061);the Natural Science Foundation of Hebei province(Nos.E2014201076,E2020201021 and E2023201019);the Research Innovation Team of College of Chemistry and Environmental Science of Hebei University(No.hxkytd2102);Shenzhen Science and Technology Innovation Committee(No.JCYJ20200109141412308);Bintuan Science and Technology Program(Nos.2020DB002 and 2022DB009);CWO funding of Ghent University。

摘　　要：One key strategy to enhance photocatalytic performance is to improve the transfer and separation efficiency of photogenerated carriers by building optimized heterojunctions.Herein,novel Bi_(4)O_5Br_(2)/NH_(2)-MIL-125(Ti)Z-scheme heterojunctions are fabricated and used as photocatalysts for organic pollutant photodegradation.The NH_(2)-MIL-125(Ti)nanosheets are exfoliated via a self-developed alkali solution stripping approach and then uniformly decorated on Bi_(4)O_(5)Br_(2).The as-prepared Bi_(4)O_(5)Br_(2)/NH_(2)-MIL-125(Ti)presents more than 90%degradation of various pollutants,outperforming the counterpart individual ones.The various characterization results suggest that the enhanced degradation rate is due to the more intimate face-to-face interfacial contact of the lamellar Z-scheme heterojunction materials,in which the migration path of carriers from the material's interior to the surface can be reduced,in turn enhancing migration efficiency and separation capability significantly.A possible photocatalytic reaction mechanism is proposed based on the photoelectric behaviors,radical trapping experiments and liquid chromatography mass spectrometry analysis.This work promotes the development of new photocatalytic materials for heterojunctions with face-to-face interfacial contacts,as well as the effective purification of wastewater in environmental remediation.

关 键 词：Z-scheme heterojunctions Photocatalysis Alkaline solution stripping Bi_(4)O_(5)Br_(2) NH_(2)-MIL-125(Ti) 

分 类 号：X505[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]