导向性二维大孔金阵列的制备及光谱电化学应用  

Preparation of Ordered Two-Dimension Macroporous Gold Array and Its Application to Spectroelectrochemistry

作　　者：吕慧丹[1,2] 刘勇平[2] 

机构地区：[1]中南大学化学与化工学院,长沙410083 [2]桂林理工大学化学与生物工程学院,桂林541004

出　　处：《分析化学》2011年第7期1048-1052,共5页Chinese Journal of Analytical Chemistry

摘　　要：为研究多孔材料的光谱电化学应用,以模板-电沉积法制备了导向性的二维大孔金阵列,将其制成光透薄层电极,测定3,3'-二甲基联苯胺的Eo'和n。采用原子力显微镜和扫描电子显微镜对其进行表征。测定了不同厚度的大孔金膜的吸收光谱。结果表明,在-0.8 V电沉积约300 s,得到大面积的厚度为292 nm的大孔金膜,透光率达20%;薄层循环伏安法测得Eo'=0.660 V,光谱电化学法测得Eo'=0.659 V,n=1.7,与文献一致,表明大孔金阵列的电化学和光谱电化学性能较好。Ordered two-dimension macroporous gold array（MGA） was prepared for application in spectroelectrochemistry by electrochemical depositing method with colloid crystal as template.It was mounted to optical transparent thin-layer electrode using to measure Eo′ and n of o-tolidine.AFM and SEM were used to characterize the monolayer gold void.The absorption spectra of macroporous gold array were measured.Results show that gold hole is just about half-sphere shape and arranged to closed-hexagonal array when electrodepositing at-0.8 V for 300 s,and the transmission of MGA was about 20%.Eo′ was measured to be 0.660 V by thin-layer cyclic Voltammetry.The change of absorbance in thin layer was monitored at different potentials according to which Eo′ and n o-tolidine redox system were calculated to be 0.659 V and 1.7 in spectroelectrochemistry.The results were agreed with literature,which showed electrochemical and spectroelectrochemical properties of MGA were good

关 键 词：大孔金阵列 光透电极 电沉积 模板 光谱电化学 

分 类 号：O657.1[理学—分析化学]