access icon free Synthesis of platinum nanoparticles with higher stability in ionic liquid–Nafion film and their electrocatalytic application

4-(3-methyl-1-imidazolio)-1-butanesulphonic acid triflate (BSMIMOTF)–Nafion film is introduced as a novel catalyst support. Nafion is used as the conductive membrane for BSMIMOTF immobilisation. A uniform distribution of spherical platinum nanoparticles (PtNPs) 10–30 nm in diameter can be electrochemically deposited on the membranous BSMIMOTF–Nafion matrix. Compared with the PtNPs on a bare and Nafion-modified electrode, the proposed sulphonyl-terminated ionic liquid (IL)–Nafion stabilised PtNPs exhibit higher electrocatalytic activity and better stability towards the electro-oxidation of methanol. The IL–Nafion film as a new catalyst support has great potential application in direct-methanol fuel cells.

Inspec keywords: nanofabrication; nanoparticles; platinum; catalysis; electrodeposition; catalysts; oxidation

Other keywords: Pt; spherical platinum nanoparticles; electrocatalytic activity; 4-(3-methyl-1-imidazolio)-1-butanesulfonic acid triflate-Nafion film; conductive membrane; BSMIMOTF immobilisation; direct-methanol fuel cells; sulfonyl-terminated ionic liquid-Nafion stabilised PtNPs; ionic liquid-Nafion film; size 10 nm to 30 nm; catalyst support; electrooxidation; membranous BSMIMOTF-Nafion matrix; electrochemical deposition; Nafion-modified electrode

Subjects: Electrochemistry and electrophoresis; Specific chemical reactions; reaction mechanisms; Deposition from liquid phases (melts and solutions); Heterogeneous catalysis at surfaces and other surface reactions; Other methods of nanofabrication; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2014.0588
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