A one-pot gold seed-assisted synthesis of gold/platinum wire nanoassemblies and their enhanced electrocatalytic activity for the oxidation of oxalic acid

被引：30
作者：
Bai, Juan [1 ]
Fang, Chun-Long [1 ]
Liu, Zong-Huai [1 ]
Chen, Yu [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Peoples R China
来源：
NANOSCALE | 2016年 / 8卷 / 05期
基金：
中国国家自然科学基金;
关键词：
OXYGEN REDUCTION REACTION; PLATINUM NANOPARTICLES; NANOWIRE ASSEMBLIES; SUPPORTED PLATINUM; CATALYTIC-ACTIVITY; SELECTIVITY; NANOSHEETS; ULTRATHIN; NANODENDRITES; NANOCRYSTALS;
D O I：
10.1039/c5nr08150e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three-dimensional (3D) noble metal nanoassemblies composed of one-dimensional (1D) nanowires have been attracting much interest due to the unique physical and chemical properties of 1D nanowires as well as the particular interconnected open-pore structure of 3D nanoassemblies. In this work, well-defined Au/Pt wire nanoassemblies were synthesized by using a facile NaBH4 reduction method in the presence of a branched form of polyethyleneimine (PEI). A study of the growth mechanism indicated the morphology of the final product to be highly related to the molecular structure of the polymeric amine. Also, the preferred Pt-on-Pt deposition contributed to the formation of the 1D Pt nanowires. The Au/Pt wire nanoassemblies were functionalized with PEI at the same time that these nanoassemblies were synthesized due to the strong N-Pt bond. The chemically functionalized Au/Pt wire nanoassemblies exhibited better electrocatalytic activity for the electro-oxidation of oxalic acid than did commercial Pt black.
引用
收藏
页码：2875 / 2880
页数：6
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