4A Zeolite Support for Pt Nanoparticles towards Methanol Oxidation. Issue 10 (28th May 2019)

• Record Type: Journal Article
• Authors: Cai, Nan; Wu, Jialu; Jin, Changchun
• Is Part Of: Journal of the Electrochemical Society. Volume 166:Issue 10(2019)
• Page Start: H387
• Page End: H391
• Publication Date: 2019-05-28
• Subjects: Electrocatalysis -- 4A zeolite -- Catalytic activity -- Support; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0171910jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The effect of 4A zeolite as a support on the electrocatalytic activity of Pt nanoparticles for the oxidation of methanol has been investigated. Pt/4A zeolite and Pt/C catalysts with the same mass of Pt are prepared by loading the Pt nanoparticles stabilized by PEG-400 on 4A zeolite and carbon black, respectively. Physical analyses reveal unevenly distributed but no large agglomerates of the Pt nanoparticles on the surface of 4A zeolite due to PEG-400 attached to the Pt nanoparticles, while the Pt nanoparticles on carbon black show a uniform distribution and a lesser degree of agglomeration. However, Pt/4A zeolite shows a much more negative onset potential and a significantly higher peak current density than Pt/C in methanol oxidation in both acidic and alkaline solutions. Pt/4A zeolite also shows high resistance to the poisoning caused by CO-like species formed in the reaction. The results indicate that 4A zeolite is superior to carbon black as a support for the Pt nanoparticles toward methanol oxidation, and further suggest that some types of zeolites could be used as efficient support materials in electrocatalysis.