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Facile Preparation Of Nanoporous Platinum And Its High Electrocatalytic Performances

Jiagang Hou, Haoran Geng, Caixia Xu, Xiaolei Mu, Jinshui Yao

Volume 2, Issue 6, Page 392-396 | DOI: 10.5185/amlett.2011.2225

Keywords: Dealloying; nanoporous; platinum; methanol; electrooxidation.

Abstract: 

Nanoporous platinum was fabricated by a simple dealloying method. Electron microscope characterizations show that selectively etching Al from PtAl alloy precursors in alkali or acid solution can both easily prepare three-dimensional bicontinuous network nanostructures of Pt. The resulted nanostructure exhibited much enhanced catalytic performance towards methanol electrooxidation compared with commercial Pt/C catalyst. More importantly, CO stripping and potentiostatic tests demonstrated that nanoporous Pt has much higher long-term catalytic stability and CO resistance than the Pt/C catalyst. Copyright © 2011 VBRI press.

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