Functionalization of electrochemically prepared titania nanotubes with Pt for application as catalyst for fuel cells

被引：19

作者：

Hassan, Fathy M. B. ^{[1
]}

Nanjo, Hiroshi ^{[1
]}

Venkatachalam, Shanmugam ^{[1
]}

Kanakubo, Mitsuhiro ^{[1
]}

Ebina, Takeo ^{[1
]}

机构：

[1] AIST, RC CCP, Miyagino Ku, Sendai, Miyagi 9838551, Japan

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 18期

关键词：

Titania nanotubes; Anodization; Electrochemical catalyst; Fuel cells; Methanol oxidation; SENSITIZED SOLAR-CELLS; METHANOL OXIDATION; TIO2; NANOTUBES; PTRU NANOPARTICLES; ELECTRODE; DEPOSITION; ELECTROOXIDATION; ARRAYS; OXYGEN; RUTHENIUM;

D O I：

10.1016/j.jpowsour.2009.12.053

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Titania nanotubes (TiNTs) were prepared by electrochemical anodization and were used as a support for depositing Pt. After annealing the TiNTs changed to crystalline anatase phase and were doped with carbon. The TiNTs/Pt/C was tested as electrode for electrochemical catalysis of methanol oxidation. The composite catalyst activities were measured by cyclic voltammetry in 1 M CH3OH + 1 M H2SO4. The results demonstrated that TiNTs/Pt/C can greatly enhance the catalytic activity of methanol oxidation. The CO stripping led to the increase in the current peak of methanol oxidation due to activating the catalyst surface by point defect formation. Moreover, the higher ratio of the forward anodic peak current to the reverse anodic peak current indicates more effective removal of the poisonous species. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：5889 / 5895

页数：7

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