Photocatalytic Cr(Ⅵ) reduction and organic-pollutant degradation in a stable 2D coordination polymer

作     者：Fu‐Xue Wang Xiao‐Hong Yi Chong‐Chen Wang Ji‐Guang Deng 王茀学;衣晓虹;王崇臣;邓积光

作者机构：Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation/Sino‐Dutch R&D Centre for Future Wastewater Treatment Technologies Beijing University of Civil Engineering and Architecture Beijing 100044 China Department of Chemistry and Chemical Engineering College of Environmental and Energy Engineering Beijing University of Technology Beijing 100022 China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2017年第38卷第12期

页      面：2141-2149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] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(51578034) the Beijing Natural Science Foundation&Scientific Research Key Program of Beijing Municipal Commission of Education(KZ201410016018) Beijing Talent Project(2016023) Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality(IDHT20170508) 

主　　题：Photocatalysis Cr(VI) reduction Organic dyes Coordination polymers Degradation 

摘      要：A new coordination polymer,Zn(bpy)L(BUC‐21),(H2L=cis‐1,3‐dibenzyl‐2‐imidazolidone‐4,5‐dicarboxylic acid,bpy=4,4′‐bipyridine),has been synthesized under hydrothermal conditions,and characterized by single‐crystal X‐ray analysis,Fourier transform infrared spectroscopy,thermogravimetric analyses,CNH elemental analysis and UV‐Vis diffuse reflectance ***‐21exhibited an excellent performance for photocatalytic Cr(VI)reduction with a conversion efficiency of96%,better than that of commercial P25(39%),under UV light irradiation ***‐21could also be used to conduct photocatalytic degradation of organic dyes including methylene blue,rhodamine B,methyl orange and reactive red X‐***,the photocatalytic activity of BUC‐21remained high across a wide pH range *** is interesting to note,however,that BUC‐21was unable to achieve simultaneous reduction of Cr(VI)and degradation of an organic pollutant in a mixed matrix,which can be attributed to the competition between Cr(VI)and the organic dyes for access to the photo‐excited electrons.