Oxygen-Plasma-Functionalized Carbon Nanotubes as Supports for Platinum-Ruthenium Catalysts Applied in Electrochemical Methanol Oxidation

被引：18
作者：
Chetty, Raghuram [1 ]
Maniam, Kranthi Kumar [1 ]
Schuhmann, Wolfgang [2 ]
Muhler, Martin [3 ]
机构：
[1] Indian Inst Technol, Dept Chem Engn, Madras 600036, Tamil Nadu, India
[2] Ruhr Univ Bochum, CES, D-44780 Bochum, Germany
[3] Ruhr Univ Bochum, Lab Ind Chem, D-44780 Bochum, Germany
来源：
CHEMPLUSCHEM | 2015年 / 80卷 / 01期
关键词：
carbon nanotubes; electrochemistry; fuel cells; plasma chemistry; platinum; HIGH-RESOLUTION XPS; ELECTROCATALYTIC ACTIVITY; SURFACE MODIFICATIONS; ELECTRONIC-PROPERTIES; PTRU NANOPARTICLES; FUEL-CELLS; O-2; PLASMA; TEMPERATURE; NANOFIBERS; PURIFICATION;
D O I：
10.1002/cplu.201402192
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Multiwalled carbon nanotubes (CNTs) functionalized by oxygen plasma were used as a support for platinum-ruthenium nanoparticles for electrochemical methanol oxidation. The influence of plasma treatment time on the electrocatalytic activity was investigated by cyclic voltammetry, CO stripping voltammetry, and chronoamperometry. The electrocatalysts were characterized by Raman spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The results showed that oxygen plasma treatment led to the formation of -CO and -COO groups on the CNT surface. Platinum-ruthenium nanoparticles dispersed with an optimum plasma treatment time of 30 min exhibited the maximum catalytic activity towards methanol oxidation. The rationale for the high catalytic activity is discussed.
引用
收藏
页码：130 / 135
页数：6
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