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

Hyung Suk Oh; Jong Gil Oh; Youn Gi Hong; Raj Kishore Sharma; Yong Gun Shul; Hansung Kim

doi:10.1163/156856708786189294

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

Hyung Suk Oh, Jong Gil Oh, Youn Gi Hong, Raj Kishore Sharma, Yong Gun Shul, Hansung Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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 H₂O₂ 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.

Original language	English
Pages (from-to)	853-861
Number of pages	9
Journal	Research on Chemical Intermediates
Volume	34
Issue number	8-9
DOIs	https://doi.org/10.1163/156856708786189294
Publication status	Published - 2008 Oct 1

Bibliographical note

Funding Information:
This work is the outcome of the fostering project of the Specialized Graduate School of Hydrogen & Fuel Cell and the Core-Technology Research Center, supported financially by the Ministry of Knowledge Economy.

All Science Journal Classification (ASJC) codes

Chemistry(all)

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10.1163/156856708786189294

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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 H2O2 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.",

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AU - Shul, Yong Gun

AU - Kim, Hansung

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N2 - 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 H2O2 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.

AB - 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 H2O2 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.

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

Abstract

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