Functionalized mesoporous carbons as platinum electrocatalyst supports for applications in fuel cells

Shou-Heng Liu, Jyun Ren Wu

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Mesoporous carbons (MCs) were synthesized by an organic-organic self-assembly process and surface-modified by the conventional acid-oxidation, H2O2 oxidation and 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane (AEPTMS) grafted methods. Fabrication of Pt nanoparticles (NPs) supported on MC (Pt/MC) and modified MC (Pt/MC-HNO3, Pt/MC-H2O2 and Pt/MC-AEPTMS) were further performed. These resultant catalysts were characterized by a variety of different spectroscopic and analytical techniques such as Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD), and transmission electron microscopy (TEM) analysis. Pt NPs were found to be aggregated on the Pt/MC-HNO3 catalysts. For Pt/MC-AEPTMS catalysts, Pt NPs (ca. 2 nm) supported uniformly on surface of modified MC which however has a low electrical conductivity. Among three surface-modified methods, the H2O2 treatment method was a simply controllable way for surface modification of MC which possesses desirable electrical conductivity, well-dispersed and nanosized Pt (ca. 3 nm). The Pt/MC-H2O2 samples were found to have superior electrocatalytic activity for oxygen reduction reaction in comparison with synthesized Pt/MC, Pt/MC-HNO3, Pt/MC-AEPTMS and the typical commercial electrocatalyst (Pt/XC-72).

原文English
頁(從 - 到)8326-8336
頁數11
期刊International Journal of Electrochemical Science
7
發行號9
出版狀態Published - 2012 12月 1

All Science Journal Classification (ASJC) codes

  • 電化學

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