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, Year 2011 | DOI: 10.5185/amlett.2011.2225
Keywords: Dealloying; nanoporous; platinum; methanol; electrooxidation.
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.