Electro-catalytic activity of multiwall carbon nanotube-metal (Pt or Pd) nanohybrid materials synthesized using microwave-induced reactions and their possible use in fuel cells

被引：36

作者：

Kumar, Lakshman V. ^{[2
]}

Ntim, Susana Addo ^{[1
]}

Sae-Khow, Ornthida ^{[1
]}

Janardhana, Chelli ^{[2
]}

Lakshminarayanan, V. ^{[3
]}

Mitra, Somenath ^{[1
]}

机构：

[1] New Jersey Inst Technol, Dept Chem & Environm Sci, Newark, NJ 07102 USA

[2] Sri Sathya Sai Inst Higher Learning, Prasanthinilayam 515134, India

[3] Raman Res Inst, Bangalore 560080, Karnataka, India

来源：

ELECTROCHIMICA ACTA | 2012年 / 83卷

关键词：

Electro chemical oxidation; Tafel slopes; Platinum and palladium; Ethanol; Graphite paste electrode; ELECTROCATALYTIC ACTIVITY; METHANOL OXIDATION; ELECTROOXIDATION; ETHANOL; SURFACE; NANOPARTICLES; PURIFICATION; PALLADIUM; FILM;

D O I：

10.1016/j.electacta.2012.07.098

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Microwave induced reactions for immobilizing platinum and palladium nanoparticles on multiwall carbon nanotubes are presented. The resulting hybrid materials were used as catalysts for direct methanol, ethanol and formic acid oxidation in acidic as well as alkaline media. The electrodes are formed by simply mixing the hybrids with graphite paste, thus using a relatively small quantity of the precious metal. We report Tafel slopes and apparent activation energies at different potentials and temperatures. Ethanol electro-oxidation with the palladium hybrid showed an activation energy of 7.64 kJ mol(-1) which is lower than those observed for other systems. This system is economically attractive because Pd is significantly less expensive than Pt and ethanol is fast evolving as a commercial biofuel. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：40 / 46

页数：7

共 40 条

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