CdS纳米棒与二维MoS_(2)异质结的构建及其对罗丹明B的光催化降解的研究  

Construction of CdS nanorods and two-dimensional MoS_(2) heterojunction for photocatalytic degradation of Rhodamine B

作　　者：黄浩 雷永林[1] 梁瑶 杨晗 刘成 HUANG Hao;LEI Yonglin;LIANG Yao;YANG Han;LIU cheng(School of Materials Science and Engineering, Southwest University of Science and Technology,Mianyang 621010)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《功能材料》2022年第2期2215-2220,共6页Journal of Functional Materials

摘　　要：采用钼酸铵作为钼源,硫脲作为硫源,通过水热法构建CdS纳米棒与二维MoS_(2)异质结材料,通过XRD、SEM、TEM、PL、UV-vis等技术对异质结进行表征,结果表明,片状MoS_(2)自组装形成的类球体与CdS纳米棒所形成的异质结(MoS_(2)所占质量分数分别为1%、5%、10%),能够有效提高CdS的可见光吸收强度,光生载流子与空穴得到了有效的分离,从而体现出卓越的光催化将降解性能。CdS/MoS_(2)-10%性能最优,在10 mg复合催化剂对50 mL浓度为20 mg/L罗丹明B的光催化降解实验中,降解效率能够达到99%;并且在5次循环实验中,CdS/MoS_(2)二元异质结的催化活性没有明显的衰减。Using ammonium molybdate as molybdenum source and thiourea as sulfur source,binary planar CdS/MoS_(2)heterojunction was prepared by hydrothermal method.The heterojunctions were characterized by XRD,SEM,TEM,PL and UV-vis techniques.The results showed that the heterojunction(the mass fractions of MoS_(2)were 1%,5%and 10%,respectively)can effectively improve the visible light absorption intensity of CdS.The photogenerated carriers and holes were effectively separated,thus the composite catalyst exhibited excellent photocatalytic performance.The performance of CdS/MoS_(2)-10%was the best.The photocatalytic degradation of 10 mg samples to 20 mg/L Roda min B can reach 99%.The catalytic activity of the binary CdS/MoS_(2)heterojunction did not decay significantly in the five-cycle experiment.

关 键 词：光催化 硫化镉 水热法 罗丹明B 

分 类 号：O644.19[理学—物理化学]