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High activity of novel Pd/TiO2 nanotube catalysts for methanol electro-oxidation

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Abstract
Electro-oxidation of methanol in sulfuric acid solution was studied using palladium well-dispersed on titanium nanotubes, in relation to methanol oxidation processes in the direct oxidation methanol fuel cell. Pd dispersed on titania nanotubes, which leads to high surface area substrates, showed excellent catalytic activities compared to those of pure Pd and Pd–TiO2 nanoparticles. TEM results show a narrow distribution of TiO2 nanoparticles whose particle size is about 10 nm, and uniform nano-sized TiO2 nanotubes with 10nm in diameters are seen from HRTEM . A homogeneous structure in the composite nanomaterials is indicated by XRD
analysis. The composite electrode activities were measured by cyclic voltammetry (CV) and at 25 1C it was found that 3 wt% Pd in titania nanotubes had the best activity for methanol oxidation.

Keywords: Palladium nanoparticles; TiO2 nanotubes; Methanol electro-oxidation

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Informasi Detail

Judul Seri

Journal of Solid State Chemistry

No. Panggil

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Penerbit

London : Elsevier Inc.., 2005

Deskripsi Fisik

Journal of Solid State Chemistry 178 (2005) 1996–2000

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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