原位拉曼光谱和石英晶体微天平研究S_2O_8^(2-)还原过程中的电势振荡  

Investigations on the potential oscillations in the reduction of S_2O_8^(2-) by in situ Raman spectroscopy and EQCM

作　　者：郑菊芳[1] 

机构地区：[1]浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2006年第2期167-171,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(2007301220373063)

摘　　要：利用原位拉曼光谱和石英晶体微天平(EQCM)技术对高浓度S2O82-在金电极上还原过程中所产生的伴有周期性析氢现象的电势振荡行为进行了研究,进一步证明了S2O82-还原引起的极限扩散耗尽和析氢导致的对流恢复是造成其电势振荡的根本原因.In situ Raman spectroscopy and EQCM had been employed to study the potential oscillatory mechanism for the S2O8^2- reduction accompanying periodic hydrogen evolution. These experimental results give further testification of that the electrochemical reactions, i. e. , S2O8^2- reduction and periodic hydrogen evolution, coupled with alternately predominant diffusion and convection mass transfer of S2O8^2- , account for the potential oscillations.

关 键 词：S2O8^2- 金电极 原位拉曼光谱 石英晶体微天平 电势振荡 

分 类 号：O646[理学—物理化学]