4A-Zeolite Enhanced Electrocatalytic Activity of Pt/C for Electrooxidation of Methanol in Alkaline Medium
In this study, Pt/C catalyst was prepared by reducing H2PtCl6 with NaBH4 as reducer, and subsequently co-mixed with the porosity structured 4A-zeolite for the purpose of enhancing of the specific activity and reducing of the dosage of noble metal. The corresponding electrocatalytic activity for electrooxidation of methanol was evaluated in alkaline medium by cyclic voltammetry. It was shown that the electrocatalytic activity of the 4A-zeolite modified Pt/C catalyst was much better than that of Pt/C catalyst (Figure 1). This increased electrocatalytic activity could be attributed to that the micrometer 4A-zeolite with porosity structure could significantly increase the effective electrode surface and facilitate the diffusion of analytes into the film of electrode surface.
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