CdSe/泡沫镍薄膜电极对结晶紫的光电催化降解  

Photoelectrocatalytic Degradation of Crystal Violet Using CdSe/Foam Nickel Thin Film Electrode

作　　者：钮金芬[1] 姚秉华[1] 姬涛[1] 陈源清[2] 

机构地区：[1]西安理工大学理学院,西安710048 [2]西安理工大学材料科学与工程学院,西安710048

出　　处：《应用化学》2013年第2期185-190,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(51102195);高等学校博士点学科专项科研基金(20096118110008);陕西省科技厅社发攻关基金(2011K17-03-02);西安市科技创新支撑计划基金(CXY09025(1));西安理工大学优秀博士学位论文研究基金(108-211005)资助项目

摘　　要：采用恒电位电沉积法,以泡沫镍为基底电极,制备了CdSe/泡沫镍薄膜电极,采用扫描电子显微镜、紫外可见漫反射光谱和能谱分析表征了CdSe薄膜的形貌及其组成。应用该电极研究结晶紫溶液在光电催化降解过程中的COD去除率。结果表明,以白炽灯(100 W,2只)为光源,采用电沉积30 min所得的CdSe/泡沫镍薄膜电极为工作电极,外加偏压为0.4 V(vs.SCE),0.01 mol/L NaCl为电解质,光电催化降解浓度为0.001 g/L的结晶紫溶液120 min,COD去除率达到84.3%。A CdSe/foam nickel thin film electrode was prepared by depositing the CdSe thin film on the foam nickel surface with potentiostatic method. The morphology and composition of CdSe/foam nickel thin film electrode were characterized by SEM, UV-Vis diffusive reflectance spectra （DRS） and energy dispersive spectra（EDS）. The chemical oxygen demand（COD） removal efficiency was investigated during the process of photoelectrocatalytic degradation of crystal violet. The results show that the COD removal efficiency of 0. 001 g/L crystal violet can reach to 84. 3% when using the CdSe/foam niekle thin film electrode as working electrode and catalyst （deposition time is 30 min） under the following conditions： 0. 01 mol/L supporting electrolyte of NaCl, anodic bias potential of 0. 4 V（vs. SCE）, irradiation for 120 min with two incandescent lamps （ 100 W）.

关 键 词：CDSE 泡沫镍薄膜 光电催化 降解 结晶紫 COD 

分 类 号：O643[理学—物理化学]