Ternary Ag/Ag3PO_(4)/MIL-125-NH2 Z-scheme heterojunction for boosted photocatalytic Cr(Ⅵ)cleanup under visible light

作     者：Yun-Cai Zhou Peng Wang Huifen Fu Chen Zhao Chong-Chen Wang Yun-Cai Zhou;Peng Wang;Huifen Fu;Chen Zhao;Chong-Chen Wang

作者机构：Beijing Key Laboratory of Functional Materials for Building Structure and Environment RemediationBeijing University of Civil Engineering and ArchitectureBeijing 100044China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第10期

页      面：2645-2650页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 09[农学] 0903[农学-农业资源与环境] 0703[理学-化学] 0713[理学-生态学] 

基　　金：Beijing Natural Science Foundation(No.8202016) Beijing Talent Project(No.2019A22) 

主　　题：MIL-125-NH2 Ag/Ag3PO4 Hexavalent chromium Z-scheme heterojunction Photocatalysis 

摘      要：The binary Ag3 P04/MIL-125-NH2(AMN-X)composites were synthesized through ion exchange-solution method,and the ternary Ag/Ag3 PO_(4)/MIL-125-NH2(AAMN-X)Z-scheme heterojunctions were prepared via the photo chemical reduction deposition *** photocatalytic hexavalent chromium(Cr(VI))sequestration over AMN-X and AAMN-X were investigated under visible ***-120 accomplished superior reduction performance due to that Ag nanoparticles(NPs)act as electrons transfer bridge to enhance the separation efficiency of photogenerated e-h+pairs,in which the reaction rates(***)were 2.77 and 124.2 fold higher than those of individual MIL-125-NH2 and Ag3 PO_(4),*** influences of different pH values,small organic acids and coexisting ions on the photocatalytic perfo rmance of AAMN-120 were also *** addition,the AAMN-120 heterojunction expressed great reusability and stability in cycling *** mechanism of photocatalytic Cr(VI)was investigated and verified through photoluminescence(PL),electrochemistry,electron spin resonance(ESR),active species capture,and Pt element deposition experiments.