Sulfonation of graphene nanosheet-supported platinum via a simple thermal-treatment toward its oxygen reduction activity in acid medium

Publisher:
Elsevier
Publication Type:
Journal Article
Citation:
International Journal Of Hydrogen Energy, 2012, 37 (19), pp. 14205 - 14210
Issue Date:
2012-01
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The sulfonated graphene nanosheet-supported platinum (s-Pt/GNS) catalyst synthesized via a simple thermal-treatment in the presence of concentrated sulfuric acid was reported in this study. Influence of sulfonation on its structural, surface, morphological and catalytic characteristics of as-prepared s-Pt/GNS was explored using X-ray diffractometer, Raman spectrometry, zeta potential analyzer, scanning and transmission electron microscopes, and cyclic voltammetry. For the oxygen reduction reaction, the current density generated from the s-Pt/GNS at 0.6 V was approximately 32.5 A gâ1 Pt, which was about 193% higher than that of original Pt/GNS. --------------------------------------------------------------------------------
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