Pt-Ru decorated self-assembled TiO2-carbon hybrid nanostructure for enhanced methanol electrooxidation
Data(s) |
01/06/2013
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Resumo |
Porous titanium oxide-carbon hybrid nanostructure (TiO2-C) with a specific surface area of 350 m(2)/g and an average pore-radius of 21 center dot 8 is synthesized via supramolecular self-assembly with an in situ crystallization process. Subsequently, TiO2-C supported Pt-Ru electro-catalyst (Pt-Ru/TiO2-C) is obtained and investigated as an anode catalyst for direct methanol fuel cells (DMFCs). X-ray diffraction, Raman spectroscopy and transmission electron microscopy (TEM) have been employed to evaluate the crystalline nature and the structural properties of TiO2-C. TEM images reveal uniform distribution of Pt-Ru nanoparticles (d (Pt -aEuro parts per thousand Ru) = 1 center dot 5-3 center dot 5 nm) on TiO2-C. Methanol oxidation and accelerated durability studies on Pt-Ru/TiO2-C exhibit enhanced catalytic activity and durability compared to carbon-supported Pt-Ru. DMFC employing Pt-Ru/TiO2-C as an anode catalyst delivers a peak-power density of 91 mW/cm(2) at 65 A degrees C as compared to the peak-power density of 60 mW/cm(2) obtained for the DMFC with carbon-supported Pt-Ru anode catalyst operating under similar conditions. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/46908/1/Bull_Mate_Scie_36-3_353_2013.pdf Nishanth, KG and Sridhar, P and Pitchumani, S and Shukla, AK (2013) Pt-Ru decorated self-assembled TiO2-carbon hybrid nanostructure for enhanced methanol electrooxidation. In: Bulletin of Materials Science, 36 (3). pp. 353-359. |
Publicador |
Indian Academy of Sciences |
Relação |
http://dx.doi.org/10.1007/s12034-013-0478-8 http://eprints.iisc.ernet.in/46908/ |
Palavras-Chave | #Solid State & Structural Chemistry Unit |
Tipo |
Journal Article PeerReviewed |