One step method of structure engineering porous graphitic carbon nitride for efficient visible-light photocatalytic reduction of Cr(Ⅵ)

作     者：Xueru Chen Yin Zhang Dashui Yuan Wu Huang Jing Ding Hui Wan Wei-Lin Dai Guofeng Guan Xueru Chen;Yin Zhang;Dashui Yuan;Wu Huang;Jing Ding;Hui Wan;Wei-Lin Dai;Guofeng Guan

作者机构：State Key Laboratory of Materials-Oriented Chemical EngineeringCollege of Chemical EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing 210009China Department of Chemistry&Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200433China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第71卷第12期

页      面：211-220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：financial support by the National Natural Science Foundation of China(No.21878159,No.21706131,No.U19B2001) the Natural Science Foundation of Jiangsu Provinceof China(No.BK20181378) Natural Science Fund for Colleges and Universities in Jiangsu Province(No.17KJB530004) China Postdoctoral Science Foundation(2018M640479) the State Key Laboratory of Materials-Oriented Chemical Engineering(ZK201712) Shanghai Science,Technology Committee(19DZ2270100) the Science and Technology Program of Nantong,China(JC2018013) 

主　　题：Porous carbon nitride Nickel foam Hydrogen Cr(VI) Photocatalysis 

摘      要：Porous g-C_(3)N_(4)nanosheets(PCN)were prepared by the nickel-assisted one-step thermal polymerization ***(H2)which was produced by the reaction between nickel(Ni)foam and ammonia(NH3)defined the structure and properties of *** the formation of PCN,the participation of H2 not only enhanced the spacing between layers but also boosted the specific surface area that more active sites were ***,H2 promoted pores formation in the nanosheets,which was beneficial to the transfer of photons through lamellar structure and improved the absorption efficiency of visible ***,the obtained PCN possessed better Cr(Ⅵ)photocatalytic reduction efficiency than pure g-C_(3)N_(4).The reaction rate constant(k)of PCN(0.013 min-1)was approximately twice that of bare g-C_(3)N_(4)(0.007 min-1).Furthermore,the effects of original pH and concentration of Cr(Ⅵ)-containing solution on re moval efficiency of Cr(Ⅵ)were explored.A possible photocatalytic mecha nism was proposed based on the experiments of radical scavengers and photoelectrochemical characterizations.