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

Shou-Heng Liu, Jyun Ren Wu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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).

Original languageEnglish
Pages (from-to)8326-8336
Number of pages11
JournalInternational Journal of Electrochemical Science
Volume7
Issue number9
Publication statusPublished - 2012 Dec 1

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Electrocatalysts
Platinum
Catalyst supports
Fuel cells
Carbon
Nanoparticles
Catalysts
Oxidation
Self assembly
Surface treatment

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Cite this

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abstract = "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).",
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Functionalized mesoporous carbons as platinum electrocatalyst supports for applications in fuel cells. / Liu, Shou-Heng; Wu, Jyun Ren.

In: International Journal of Electrochemical Science, Vol. 7, No. 9, 01.12.2012, p. 8326-8336.

Research output: Contribution to journalArticle

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