硫化镉纳米修饰电极的制备及其光电催化应用  

Preparation of CdS Nanoparticle Modified Electrode and Its Application in Photoelectrocatalysis

作　　者：余秀萍[1] 狄俊伟[1] 

机构地区：[1]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《常熟理工学院学报》2010年第4期71-75,共5页Journal of Changshu Institute of Technology

基　　金：江苏省教育厅自然科学基金(07KJB150101);苏州大学科研预研基金(Q3109840)资助项目

摘　　要：以氯化镉和硫代硫酸钠溶液为电解液,应用循环伏安法,直接在氧化铟锡(ITO)导电玻璃表面电沉积制得硫化镉(CdS)纳米粒子.采用扫描电镜(SEM)和紫外-可见吸收光谱对制得的硫化镉的形状、大小、密度进行表征.在电镀液为0.1MCdCl2和0.02MNa2S2O3,电位范围为-0.2V^-0.8V,沉积40圈,温度50℃的条件下,制得的CdS纳米粒子大小均匀,分散性好,平均粒径约为60nm,并用制得的ITO/CdS电极研究了对甲基橙溶液(MeO)的光电催化性能.结果表明,光照条件下,电流增加了约62%.Cadmium sulfide （CdS） nanoparticle was directly deposited on the indium tin oxide （ITO） surface by cyclic voltammetry （CV） using CdC12 and Na2S2O3 as electrolyte. The shape, size and density of CdS were characterized by scanning electron microscope （SEM） and UV-Vis spectroscopy. The CdS nanoparticle was electrodeposited from 0.1M CdC12 and 0.02M Na2S2O3 mixed electrolyte in the range of -0.2V to -0.8V for 40 segment at 50℃. The average diameter of CdS nanoparticles are about 60nm with uniformity and dispensability. This ITO/CdS electrode was used to study the photoelectroeatalytic reaction to methyl orange （MeO）. The results indicate that the current increased about 62% under illuminating.

关 键 词：电沉积 硫化镉 光电催化 甲基橙 

分 类 号：O646.51[理学—物理化学] O614.242[理学—化学]