Tailoring multi-metallic nanotubes by copper nanowires with platinum and gold via galvanic replacement route for the efficient methanol oxidation reaction

被引：25

作者：

Naresh, N. ^{[1
,2
]}

Karthik, P. ^{[1
]}

Vinoth, R. ^{[1
]}

Muthamizhchelvan, C. ^{[2
]}

Neppolian, B. ^{[1
]}

机构：

[1] SRM Inst Sci & Technol, SRM Res Inst, Kanchipuram 603203, Tamil Nadu, India

[2] SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Kanchipuram 603203, Tamil Nadu, India

来源：

ELECTROCHIMICA ACTA | 2018年 / 282卷

关键词：

Trimetallic CuPtAu nanotubes; Galvanic replacement reaction; Kirkendall effect; MOR; CATALYTIC-ACTIVITY; BIMETALLIC NANOTUBES; ALLOY NANOTUBES; FORMIC-ACID; NANOPARTICLES; NANOCRYSTALS; ELECTROCATALYSTS; PERFORMANCE; GRAPHENE; CARBON;

D O I：

10.1016/j.electacta.2018.06.094

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A facile galvanic replacement approach was successfully adopted to design trimetallic CuPtAu nanotubes (NTs) using pre-synthesized Cu nanowires (Cu NWs) as a partial sacrificial template. It was observed that both galvanic replacement reaction and Kirkendall effect played a crucial role for the formation of trimetallic CuPtAu NTs. The morphological studies clearly confirmed that formation of well-defined trimetallic CuPtAu NTs. The prepared trimetallic NTs exhibited remarkable methanol oxidation performance compared to that of commercial Pt/C catalyst. A maximum current density of 1959.67 mA/mg Pt-1 was achieved, which was similar to 4.2 fold higher than commercial Pt/C catalyst. This strategy can be adopted for the synthesis of Pt-based metallic nanotubes for efficient MOR activity. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：792 / 798

页数：7