Citation: NIE Su-Lian, ZHAO Yan-Chun, FAN Jie-Wen, TIAN Jian-Niao, NING Zhen, LI Xiao-Xiao. Highly Active Pd-Co₃O₄/MWCNTs Catalysts for Methanol Electrocatalytic Oxidation[J]. Acta Physico-Chimica Sinica, ;2012, 28(04): 871-876. doi: 10.3866/PKU.WHXB201202013 shu

Highly Active Pd-Co₃O₄/MWCNTs Catalysts for Methanol Electrocatalytic Oxidation

1.
Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China, College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi Province, P. R. China

Received Date: 19 October 2011
Available Online: 1 February 2012
Fund Project: 广西自然科学基金(2010GXNSFF013001, 0728043) (2010GXNSFF013001, 0728043)国家自然科学基金(21163002)资助项目 (21163002)

Nano-flocculent-Co₃O₄ modified multi-walled carbon nanotubes supported Pd nanoparticles (Pd-Co₃O₄/MWCNTs) with uniform dimensions were prepared by a facile hydrothermal method using Co(NO₃)₃·6H₂O as the cobalt source, polyethylene glycol (PEG) 20000 as a surface active agent, and H₂PdCl₄ as the Pd precursor. The catalysts were characterized by scanning electron microscopy, transmission electron microscopy, and X-ray powder diffraction. The Pd nanoparticles had a face-centered cubic crystal structure and were well dispersed on the external walls of the Co₃O₄/MWCNTs. The catalytic activity was studied by cyclic voltammetry and chronoamperometry toward methanol oxidation. The Pd-Co₃O₄/MWCNT catalysts had a large electrochemically active area, od electrocatalytic performance, and stability toward methanol oxidation in alkaline media. All the results suggest that Co₃O₄ will improve the electrocatalytic activity in direct methanol fuel cells.
- Direct methanol fuel cell,
- Co₃O₄,
- Hydrothermal method,
- Pd,
- Multi-walled carbon nanotubes,
- Electrocatalytic oxidation
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沈阳化工大学材料科学与工程学院沈阳 110142

Highly Active Pd-Co3O4/MWCNTs Catalysts for Methanol Electrocatalytic Oxidation

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通讯作者: 陈斌, bchen63@163.com

Highly Active Pd-Co₃O₄/MWCNTs Catalysts for Methanol Electrocatalytic Oxidation