Preparation of Pt/C catalyst using alcohol reduction and a polyol process in the presence of urea for oxygen reduction reaction

Title
Preparation of Pt/C catalyst using alcohol reduction and a polyol process in the presence of urea for oxygen reduction reaction
Authors
오형석오종길홍윤기Raj Kishore Sharma설용건김한성
Keywords
Pt/C; electro catalyst; polyol process; urea hydrolysis
Issue Date
2008-10
Publisher
Research on chemical intermediates
Citation
VOL 34, NO 8-9-861
Abstract
The effect of urea hydrolysis was studied on the preparation and properties of Pt/C catalyst. The hydrolysis of urea provided hydroxyl ions in a controlled manner that prevented the localized pH change in the solution and only surface precipitation is resulted in a particle growth. From rotating ring disk electrode (RRDE) experiments, the Pt/C prepared in the presence of urea showed better exchange current density toward the oxygen reduction reaction. The rate of H(2)O(2) formation was reduced when urea was used in the alcohol reduction process and it was further decreased in the Pt/C catalyst prepared by the polyol process combined with urea.
URI
http://pubs.kist.re.kr/handle/201004/67027
ISSN
0922-6168
Appears in Collections:
KIST Publication > Article
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