Title :
Synthesis of platinum nanoparticles with higher stability in ionic liquid–Nafion film and their electrocatalytic application
Author :
Qing Zhang ; Dawei Pan ; HaiYun Zhang ; HaiTao Han
Author_Institution :
Key Lab. in Mol. & Nano-Mater. Probes of the Minist. of Educ. of China, Shandong Normal Univ., Jinan, China
Abstract :
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.
Keywords :
catalysis; catalysts; electrodeposition; nanofabrication; nanoparticles; oxidation; platinum; 4-(3-methyl-1-imidazolio)-1-butanesulfonic acid triflate-Nafion film; BSMIMOTF immobilisation; Nafion-modified electrode; Pt; catalyst support; conductive membrane; direct-methanol fuel cells; electrocatalytic activity; electrochemical deposition; electrooxidation; ionic liquid-Nafion film; membranous BSMIMOTF-Nafion matrix; size 10 nm to 30 nm; spherical platinum nanoparticles; sulfonyl-terminated ionic liquid-Nafion stabilised PtNPs;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2014.0588
