溶剂热法制备CdS@g-C3N4复合材料及其催化性能研究  

Preparation of CdS@g-C3N4 by solvothermal method and its catalytic performance

作　　者：王丽[1] 刘进 师兆忠 孙瑞敏[1] 赵辉[1] Wang Li;Liu Jin;Shi Zhaozhong;Sun ruimin;Zhao Hui(Henan Key Laboratory for Advanced Silicon Carbide Materials,Kaifeng Key Laboratory of Clean Production Technology of Chemical Industry,Research Center of Functional Materials,Kaifeng University,School of Material and Chemical Engineering,Kaifeng University,Kaifeng 475004,China)

机构地区：[1]河南省先进碳化硅材料重点实验室,开封市化工清洁生产技术重点实验室,开封大学功能材料研究中心,开封大学材料与化学工程学院,河南开封475004

出　　处：《工业水处理》2021年第1期38-42,共5页Industrial Water Treatment

基　　金：河南省科技攻关项目(212102310507);河南省高等学校重点科研项目(17A150037);河南省高等学校骨干教师培养计划(2017GGJS269);开封大学博士基金项目(2016-1)。

摘　　要：以乙醇为溶剂,采用溶剂热法合成CdS@g-C3N4复合材料,利用SEM、XRD、UV-Vis等对其进行结构和形貌表征。以亚甲基蓝(MB)为降解底物,在模拟太阳光下考察了CdS@g-C3N4的光催化降解活性。结果表明,50%CdS@g-C3N4对MB的降解效率30 min就达到90%以上。在相同反应条件下,CdS@g-C3N4复合材料比纯g-C3N4以及CdS具有更高的催化活性。CdS在CdS@g-C3N4复合材料中的作用主要有:提高了材料的光吸收能力,提高了对有机污染物的吸附能力,同时促进了光生电子-空穴对的分离。此外,CdS@g-C3N4光催化剂在循环测试中表现出了足够的催化稳定性。Taking ethanol as solvent,CdS@g-C3N4 composites was synthesized by solvothermal method,and the structure and morphology of CdS@g-C3N4 were characterized by SEM,XRD,UV-Vis,etc.Using methylene blue(MB)as the degradation substrate,the photocatalytic degradation activity of CdS@g-C3N4 was investigated under simulated sunlight.The results showed that the degradation efficiency of MB on 50%CdS@g-C3N4 reached above 90%in 30 min.Under the same reaction conditions,the CdS@g-C3N4 composite showed higher catalytic activity than pure g-C3N4 and CdS.The role of CdS in CdS@g-C3N4 composite materials mainly include as follows:improving the light absorption capacity of the material and the adsorption capacity of organic pollutants,promoting the separation of photogenerated electron-hole pairs.In addition,the CdS@g-C3N4 photocatalyst exhibits sufficient catalytic stability in the cycle test.

关 键 词：CDS g-C3N4 光催化 溶剂热法 降解 

分 类 号：X703.1[环境科学与工程—环境工程]