氮化碳负载海泡石光催化降解有机染料的研究  

Study on photocatalytic degradation of organic dye over carbon nitride loaded sepiolite

作　　者：王连荧 黄佳敏 林香凤 陈孟林[1,2,3] 高澍[1,2,3] WANG Lian-ying;HUANG Jia-min;LIN Xiang-feng;CHEN Meng-lin;GAO Shu(Key Laboratory for Ecology and Environmental Protection of Rare and Endangered Species for the Ministry of Education,Guangxi Normal University,Guilin 541004,China;College of Environment and Resources,Guangxi Normal University,Guilin 541004,China;Guangxi Universities'Key Laboratory of Karst Ecology and Environmental Change,Guilin 541004,China)

机构地区：[1]珍稀濒危动植物生态与环境保护教育部重点实验室(广西师范大学),广西桂林541004 [2]广西师范大学环境与资源学院,广西桂林541004 [3]岩溶生态与环境变化研究广西高校重点实验室,广西桂林541004

出　　处：《现代化工》2022年第10期114-119,125,共7页Modern Chemical Industry

基　　金：国家自然科学基金(21166005);广西自然科学基金(2017GXNSFBA198216);广西高校中青年教师基础能力提升项目(2017KY077);珍稀濒危动植物生态与环境保护教育部重点实验室(广西师范大学)主任基金(ERESEP2020Z19);岩溶生态与环境变化研究广西高校重点实验室主任基金(YRHJ15Z020,YRHJ15Z025)。

摘　　要：制备了石墨相氮化碳(g-C_(3)N_(4))负载海泡石复合催化剂并对其进行了表征。以亚甲基蓝为模拟有机污染物、氙灯为可见光光源测试了催化剂的可见光催化活性。研究了g-C_(3)N_(4)负载量、催化剂投加质量、染料初始质量浓度和溶液初始pH等对染料去除率的影响。结果表明,催化剂具有选择性吸附和光催化活性。同时探讨了光催化降解过程的动力学和光催化过程的机理。Graphite phase carbon nitride(g-C_(3)N_(4))/sepiolite composite catalyst is prepared and characterized.Its catalytic activity under visible light is tested by using methylene blue as the simulating organic pollutant,and xenon lamp as visible light.The influences of the loading amount of g-C_(3)N_(4),the dosage of the catalyst,the initial concentration of methylene blue and the initial pH of solution on the removal rate of methylene blue are studied.Experimental results show that the catalyst exhibits selective adsorption and photocatalytic activity.The photocatalytic degradation kinetic and the photocatalytic mechanism are also explored.

关 键 词：氮化碳 海泡石 亚甲基蓝 可见光 催化 机理 

分 类 号：X52[环境科学与工程—环境工程]