In situ preparation of g-C_(3)N_(4)/polyaniline hybrid composites with enhanced visible-light photocatalytic performance  

作　　者：Chongfei Yu Lu Tan Shujie Shen Menghao Fang Ling Yang Xinfan Fu Shuying Dong Jianhui Sun 

机构地区：[1]School of Environment,Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control,Ministry of Education,Henan Key Laboratory for Environmental Pollution Control,Henan Normal University,Xinxiang 453007,China

出　　处：《Journal of Environmental Sciences》2021年第6期317-325,共9页环境科学学报（英文版）

基　　金：supported by the NSFC(Nos.21677047 and U1604137);the Innovation Scientists and Technicians Troop Construction Projects,the Research Start-up Foundation(No.5101219170107);the Youth Science Foundation(No.2015QK29)of Henan Normal University for the Ph D;the Key Scientific and Technological Projects in Henan Province(No.132102210129);research fund from Henan Normal University(Nos.5101039170157 and 5101039170304);Postdoctoral Science Foundation of Henan Province(No.5201029470213)。

摘　　要：The graphic carbon nitride/polyaniline(g-C_(3)N_(4)/PANI)hybrid composites were successfully synthesized by a facile in situ polymerization process under ice water bath.The photocatalytic activities of the g-C_(3)N_(4)/PANI composites were evaluated by using oxytetracycline(OTC)as model pollutants.The optimal g-C_(3)N_(4)/PANI composite(5%PANI:the g-C_(3)N_(4)/PANI hybrid with 5 wt.%of PANI)showed an enhancement degradation rate of 5-fold compared to that of conventional g-C_(3)N_(4)under simulated-sunlight irradiation.In addition,the 5%PANI demonstrate significantly photocatalytic evolution H_(2)rate(163.2μmol/(g·hr))under the visible light irradiation.Furthermore,based on the results of optical performance and electrochemical testing,a possible mechanism was proposed,indicating that the incorporation of PANI into the traditional g-C_(3)N_(4)can effectively tune the electronic structures,improve the photo-generated electrons-holes separation and enhance extensive absorption of visible light.Such a g-C_(3)N_(4)/PANI hybrid nanocomposites could be envisaged to possess great potentials in practical wastewater treatment and water splitting.

关 键 词：g-C_(3)N_(4)/polyaniline Photocatalytic degradation OXYTETRACYCLINE Photocatalytic hydrogen production Visible light 

分 类 号：X703[环境科学与工程—环境工程] TQ116.2[化学工程—无机化工] TQ426