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Synthesis of Mesoporous Pt Films with Tunable Pore Sizes from Aqueous Surfactant Solutions
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2012 (engelsk)Inngår i: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 24, nr 9, s. 1591-1598Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Platinum (Pt) is widely used as battery electrodes, catalysts for chemicals, and catalysts for exhaust gas decomposition in industries. Increasing need and very limited supply of rare Pt is a serious problem in the world. Here, we propose new synthetic way for reducing the use of Pt in a catalytic system by increasing the surface area and modifying the Pt surface structure. Several types of mesoporous Pt films with different pore sizes ranging from 5 to 30 nm are prepared by electrochemical plating in aqueous surfactant solutions. The mesopore walls are composed of connected Pt nanoparticles with around 3 nm in diameter. The Pt atomic crystallinity is coherently extending across over several Pt nanoparticles, showing a large number of atomic steps, which can accelerate methanol oxidation reaction. As a result of a high surface area and unique Pt surface, our mesoporous Pt film exhibits high potentiality as a superior electrocatalyst.

sted, utgiver, år, opplag, sider
2012. Vol. 24, nr 9, s. 1591-1598
Emneord [en]
mesoporous film, mesoporous material, Pt, surfactant assembly, electrochemical deposition
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Identifikatorer
URN: urn:nbn:se:su:diva-80102DOI: 10.1021/cm300054bISI: 000303628100008OAI: oai:DiVA.org:su-80102DiVA, id: diva2:553434
Merknad

AuthorCount:10;

Tilgjengelig fra: 2012-09-19 Laget: 2012-09-12 Sist oppdatert: 2020-03-05bibliografisk kontrollert

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