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|標題:||Electrochemical deposition of platinum nanoparticles in multiwalled carbon nanotube-Nafion composite for methanol electrooxidation||作者:||Tsai, Y.C.
|關鍵字:||multiwalled carbon nanotubes;Nafion;platinum nanoparticles;methanol;temperature fuel-cells;electrocatalytic properties;glucose biosensor;supercritical-fluid;high dispersion;oxidation;catalyst;nanocomposite;oxidase;electrodeposition||Project:||Journal of Solid State Electrochemistry||期刊/報告no：:||Journal of Solid State Electrochemistry, Volume 12, Issue 10, Page(s) 1293-1299.||摘要:||
Platinum nanoparticles were successfully deposited within a multiwalled carbon nanotube (MWCNT)-Nafion matrix by a cyclic voltammetry method. A Pt(IV) complex was reduced to platinum nanoparticles on the surface of MWCNTs. The resulting Pt nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The Pt-MWCNT-Nafion nanocomposite film-modified glassy carbon electrode had a sharp hydrogen desorption peak at about -0.2 V vs. Ag/AgCl (3 M) in a solution of 0.5 M H2SO4, which is directly related to the electrochemical activity of the Pt nanoparticles presented on the surface of MWCNTs. The electrocatalytic properties of the Pt-MWCNT-Nafion nanocomposite-modified glassy carbon electrode for methanol electrooxidation were investigated by cyclic voltammetry in a 2 M CH3OH+1 M H2SO4 solution. In comparison with the Pt-coated glassy carbon electrode and the Pt-Nafion modified glassy carbon electrode, the Pt-MWCNT-Nafion-modified electrode had excellent electrocatalytic activity toward methanol electrooxidation. The stability of the Pt-MWCNT-Nafion nanocomposite-modified electrode had also been evaluated.
|Appears in Collections:||化學工程學系所|
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