Oligonucleotide-assisted successive coreduction synthesis of dendritic platinum-gold core-shell alloy nanocrystals with improved electrocatalytic performance for methanol oxidation

被引：32

作者：

Chen, Li-Xian ^{[1
]}

Liu, Lei ^{[1
]}

Feng, Jiu-Ju ^{[1
]}

Wang, Zhi-Gang ^{[2
]}

Wang, Ai-Jun ^{[2
]}

机构：

[1] Zhejiang Normal Univ, Coll Chem & Life Sci, Jinhua 321004, Peoples R China

[2] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2016年 / 302卷

基金：

中国国家自然科学基金;

关键词：

Polyinosinic acid; Successive coreduction; Core-shell alloy nanocrystals; Methanol oxidation; REDUCED GRAPHENE OXIDE; OXYGEN REDUCTION; FACILE SYNTHESIS; NANOPARTICLES; NANOSTRUCTURES; ELECTROOXIDATION; NANOCOMPOSITES; NANODENDRITES; CATALYSIS; NETWORK;

D O I：

10.1016/j.jpowsour.2015.10.048

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, well-defined dendritic Pt-Au core shell alloy nanocrystals (Pt-Au CSANCs) are synthesized on a large scale via a simple one-pot oligonucleotide-assisted successive coreduction route. The atomic ratios of Pt to Au in the core and shell of Pt Au CSANCs are 4:1 and 2:3, respectively. Polyinosinic acid (PIA), a commercially available oligonucleotide, is employed as a capping agent. Control experiments demonstrate that the dosage of PIA and the successive coreduction are essential to form dendritic Pt Au CSANCs. The as-synthesized architectures show enhanced electrocatalytic activity and improved stability for methanol oxidation in alkaline media by comparison with PtAu nanocrystals and commercial Pt black catalysts: (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：140 / 145

页数：6

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