Biothiol-mediated synthesis of Pt nanoparticles on graphene nanoplates and their application in methanol electrooxidation
Source abstract
Abstract
We synthesized highly dispersive Pt nanoparticles on graphene nanoplates (GNPs) under the orientation of different biothiols templates. Through the characterizations of FT-IR, ITC, HRTEM, EELS, XPS, cyclic voltammetry and chronoamperometry, it is demonstrated that the catalytic performance of GNPs-supported Pt NPs is greatly associated with thiol-containing groups, particle sizes as well as morphologies. There is a synergetic effect between biothiols and GNPs to modulate the dispersity and the distribution of Pt NPs. The biothiol-templated non-spherical Pt NPs on GNPs show higher activity and better stability in methanol oxidation reaction, comparing with those spherical Pt NPs formed in the solution and commercial Pt/C. Particularly for adopting cysteine as the biotemplate, Pt NPs show the highest catalytic activities as well as the enhanced antipoisoning property, with the mean width of 3 nm and the length ranging in 3–13 nm. These results pave a new way to manufacture hybrid nanocatalysts on the basis of facile modulation by biothiols.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrochemical Analysis and Applications
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