Co@Pt core-shell nanoparticles supported on carbon nanotubes as promising catalyst for methanol electro-oxidation

被引：34
|
作者：
Ali, Shahid [1 ]
Ahmed, Riaz
Sohail, Manzar [1 ]
Khan, Safyan Akram [1 ]
Ansari, Muhammad Shahid [2 ]
机构：
[1] King Fahd Univ Petr & Minerals, Ctr Excellence Nanotechnol, Dhahran 31261, Saudi Arabia
[2] Quaid I Azam Univ Islamabad, Dept Chem, Islamabad 45320, Pakistan
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 28卷
关键词：
Core-shell nanoparticles; Multi-walled carbon nanotubes; Cyclic voltammetry; Methanol oxidation; Direct methanol fuel cells; ELECTROCATALYTIC ACTIVITY; OXYGEN REDUCTION; NI; OXIDATION; METAL; PD; SURFACES;
D O I：
10.1016/j.jiec.2015.03.014
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Co@Pt (Co-core, Pt-shell) 4-10 nm sized particles supported on functionalized multi-walled carbon nanotubes (MWCNTs) have been synthesized and tested as efficient catalyst in direct methanol fuel cells (DMFCs). Catalytic activity and durability of all the catalysts for methanol oxidation (MO) have been studied in basic medium (0.5 M KOH) using cyclic voltammetry (CV). Chronoamperometry studies revealed that Co@Pt/MWCNTs has significantly high efficiency and stability than both Pt/MWCNTs and Co@Pt/MWCNTs catalysts. Mass activity exhibited by Co@Pt/MWCNTs for MO is 1.61 and 3.36 times higher than those of Pt-Co/MWCNTs and Pt/MWCNTs, respectively. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：344 / 350
页数：7
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