二硫化钼/石墨相氮化碳复合光催化剂的制备及其可见光催化性能研究  

Study on preparation and performance of MoS_(2)/g-C_(3)N_(4) composite photocatalyst

作　　者：张宏忠 周航航 王兰 宋亚丽 张欢 钱旭辉 刘帅霞 Zhang Hongzhong;Zhou Hanghang;Wang Lan;Song Yali;Zhang Huan;Qian Xuhui;Liu Shuaixia(Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450000;Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou 450000;School of Resources and Environmental Engineering,Henan University of Engineering,Zhengzhou 450000)

机构地区：[1]郑州轻工业大学材料与化学工程学院,郑州450000 [2]环境污染治理与生态修复河南省协同创新中心,郑州450000 [3]河南工程学院资源与环境学院,郑州450000

出　　处：《化工新型材料》2021年第1期199-203,共5页New Chemical Materials

基　　金：河南省重点研发与推广专项(192102310243);河南省创新型科技团队项目(CXTD2015023)。

摘　　要：通过热解法-化学剥离法制备层状结构的石墨相氮化碳(g-C_(3)N_(4)),进一步通过水热法制备了一系列不同质量比的二硫化钼/石墨相氮化碳(MoS2/g-C_(3)N_(4))复合光催化剂。采用场发射扫描电子显微镜(SEM)和元素分布(mapping)分析、X射线衍射(XRD)以及紫外-可见吸收光谱(UV-Vis)对样品的微观结构和光学性能进行表征,在可见光照射下,研究光催化剂对有机染料的光降解性能以及光分解水产氢性能。结果表明:当光催化剂浓度为0.2g/L,可见光照射180min后,其对RhB和MB的降解率分别为78.8%和94.6%,反应常数分别是MoS2和g-C_(3)N_(4)的38.2倍和21.5倍。在可见光照射下,光催化分解水产氢的最高速率为151.4μmol/(g·h)。The layered g-C_(3)N_(4) was synthesized by pyrolysis-chemical stripping method,and a series of MoS2/g-C_(3)N_(4) composite photocatalysts with different mass ratio were prepared by hydrothermal method.The microstructure and optical properties of the samples were characterized by field emission scanning electron microscopy(SEM),elemental mapping,X-ray diffraction(XRD),and UV-Vis absorption spectroscopy(UV-Vis).The photodegradation of organic dyes and photocatalytic split water for hydrogen production were studied under visible light irradiation.When the concentration of photocatalyst was 0.2 g/L,the degradation rates of RhB and MB were 78.8%and 94.6%after 180 min,and the reaction constants are 38.2 and 21.5 times than those of MoS2 and g-C_(3)N_(4),respectively.The maximum rate of photocatalytic hydrogen evolution was 151.4μmol/(g·h)under visible light.

关 键 词：二硫化钼/石墨相氮化碳 复合光催化剂 降解 产氢 

分 类 号：O649.4[理学—物理化学]