吸附物种在金纳米电极上的表面扩散  

Surface Diffusion of Adsorptive Species on Gold Nanoelectrodes

作　　者：苏宝法[1] 王玮[1] 詹东平[1] 任斌[1] 田中群[1] 

机构地区：[1]厦门大学固体表面物理化学国家重点实验室,化学化工学院化学系,福建厦门361005

出　　处：《电化学》2011年第3期300-305,共6页Journal of Electrochemistry

基　　金：国家自然科学基金(No.20973142);NSFC-NSF中美化学领域合作项目(No.21061120456);国家自然科学基金委界面电化学创新群体(No.21021002)资助

摘　　要：应用激光加热拉伸法制备金纳米电极,研究了非金属物种氧和碘在金纳米电极表面的吸附以及金属铅和铜在金纳米电极表面的欠电势沉积行为,观察到吸附物种在金纳米电极上显著的表面扩散现象.Gold nanoelectrodes were prepared successfully by a programmed laser puller.The Faraday adsorptions of oxygen and iodine,and the underpotential deposition of lead on the gold nanoelectrodes were investigated.The results showed that the active areas of nanoelectrodes were dramatically higher than their apperant geometry areas,which is caused by the surface diffusion of adsorptive species from the nanoscale gold/electrolyte interface to the adjacent gold surface.

关 键 词：金纳米电极 吸附 欠电势沉积 扩散 

分 类 号：O647.32[理学—物理化学]