Effect of aging on the electrocatalytic activity of gold nanoparticles

被引：19
作者：
Kang, Hyun Ju
Patra, Srikanta
Das, Jagotamoy
Aziz, Abdul
Jo, Jinkyung
Yang, Haesik [1 ]
机构：
[1] Pusan Natl Univ, Dept Chem, Pusan 609735, South Korea
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
Au nanoparticle; Electrocatalytic activity; Aging; H2O2; Formic acid; OXYGEN REDUCTION; SURFACE; HYDROGEN; ELECTRODEPOSITION; ENHANCEMENT; GENERATION; STATES;
D O I：
10.1016/j.elecom.2010.06.030
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrocatalytic activities of freshly prepared nanomaterials do not represent normal activities, if they change with aging. We report the dependence of the electrocatalytic activity of gold nanoparticles (AuNPs) upon aging. The activities of AuNPs prepared by four different methods (electrodeposition; reduction of Au ions with NaBH4, citrate, and ascorbate, respectively) slowly decrease with aging in the electrooxidation of H2O2 or formic acid, both in air and in solution. The possible origin of this effect is discussed. (C) 2010 Elsevier B.V. All tights reserved.
引用
收藏
页码：1245 / 1248
页数：4
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