PbO_2-TiO_2纳米复合电极的制备及光电催化性能  

Preparation and Photoelectrocatalytic Properties of PbO_2-TiO_2 Nanocomposite Electrode

作　　者：杨洋[1] 崔磊磊 李杨[1] 姚颖悟[1] YANG Yang;CUI Leilei;LI Yang;YAO Yingwu(School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《电镀与精饰》2018年第11期42-46,共5页Plating & Finishing

摘　　要：本文采用脉冲电沉积法制备了PbO_2-TiO_2纳米复合电极,采用SEM、EDS和XRD表征了该电极的形貌、结构与元素组成,并研究了该电极的光电响应性质以及对染料罗丹明B的光电催化降解性能。结果表明,在脉冲频率10 Hz、沉积电流密度0.05 A/cm^2、占空比0.2的条件下制备的PbO_2-TiO_2电极具有最快的电沉积速度、最佳的纳米颗粒含量以及最长的电极寿命。该电极在365 nm紫外光照射下光电催化降解罗丹明B 90 min后,罗丹明B的紫外吸收特征光谱完全消失。In this work,PbO2-TiO2 nanocomposite electrode was fabircated by compositing photo-active TiO2 nanoparticles into PbO2 electrode by pulse electrodeposition method.Scanning electron microscopy(SEM),energy-dispersive spectroscopy(EDS)and X-ray diffraction(XRD)were employed to characterize the morphology,structure and composition of the electrode.Furthermore,the photoelectric response property and photoelectrocatalytic degradation toward rhodamine B of the electrode were studied.The results showed that the PbO2-TiO2 electrode obtained at pulse frequency of 10 Hz,current density of 0.05 A/cm2 and duty cycle of 0.2 had the fastest electrodeposition rate,highest TiO2 content,and longest service lifetime.Finally,the ultraviolet absorption spectrum of rhodamine B was completely disappeared after degradation for 90 min under irridiation of 365 nm UV light with the electrode.

关 键 词：脉冲电沉积 PbO2-TiO2纳米复合电极 光电催化 降解 

分 类 号：TQ178.2[化学工程—硅酸盐工业]