自组装纳米Au电极及其对H_2O_2催化氧化的研究

On the nm self-assembled Au electrodes and their application to H_2O_2 calalytic oxidation

研究了纳米粒子 -金溶胶在铂金电极表面的单分子层自组装 ,并探讨了K3 Fe(CN) 6在金溶胶表面的电化学吸附性质 ;同时 ,以金溶胶修饰电极为工作电极 ,铂金电极为对电极 ,Ag/AgCl电极为参比电极组成的三电极系统对H2 O2 有良好的催化氧化作用 ,在 1.0× 10 -6～ 1.0× 10 -3 mol/L的浓度范围内与氧化峰峰电流呈良好的线性关系 ,为纳米自组装修饰电极在电化学及生物催化反应等方面的应用开辟了新的途径 .

The monomolecular layer self assembly of nm particle goldsol on the surface of platinum electrodes and the electrochemical absorption properties of K 3Fe(CN) 6 on the surface of goldsol are investigated.It is observed that the triple electrode consisting of the goldsol dressing electrode as the working electrode,the platinum electrodes as the couplet electrodes and the Ag/AgCl electrode as the reference electrode executes good catalytic oxidation onH 2O 2,which maintains the good linear relationship with the peak current at the peak oxidation.This discovery is likely to suggest new applications of nm self assembled dressing electrodes in the fields of electrochemistry and biological catalytic reactions.