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Pt纳米微粒电极上CO吸附的电化学循环伏安和原位FTIR反射光谱
Authors
姜艳霞
孙世刚
陈卫
Publication date
30 November 2002
Publisher
Abstract
用化学还原法制备铂金属纳米微粒.经TEM表征纳米Pt微粒的平均直径为2.5nm.应用电化学循环伏安法研究了该纳米微粒电极的电化学性质,与本体Pt相比,吸附在Pt纳米微粒表面CO的氧化电流峰较宽.原位傅里叶变换红外反射光谱检测到Pt纳米微粒电极表面的孪生吸附态CO,以及随电极电位变化线型吸附和孪生吸附态CO向桥式吸附态CO的转化过程.还发现了Pt纳米微粒上吸附态CO的增强红外吸收等一系列特殊性能.国家自然科学基金资助项目(批准号:29833060,20021002)
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Last time updated on 10/06/2020