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|
| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Scholars in Electrochemistry |
| Room No. |
Room 320 |
| Time |
THU 10:45-: |
| Code |
ELEC.O-8 |
| Subject |
Methanol dehydrogenation reaction at Au@Pt catalysts: Insight into the methanol oxidation |
| Authors |
Hwakyeung Jeong, Jongwon Kim*
Department of Chemistry, Chungbuk Natioanl University, Korea
|
| Abstract |
The methanol oxidation reaction (MOR) on Pt has received great attention because of its importance in the development of fuel cells. It is widely accepted for MOR on Pt that the methanol molecule is first adsorbed on Pt, and then adsorbed methanol is further electrochemically reduced via different pathways; CO pathway or non-CO pathway. During the MOR involving CO as intermediates, methanol dehydrogenation reactions should be preceded to produce COads. The methanol dehydrogenation reaction (MDHR) is important for elucidating the reaction mechanism of MOR. Recently, bimetallic Au-Pt catalysts were developed as efficient MOR electrocatalysts. In this work, the MDHR on Pt layers modified on Au surfaces using in-situ surface-enhanced Raman scattering (SERS) was investigated. The Pt layers with different the coverage and thickness on dendritic Au rod surfaces were fabricated using the self-terminating electrodeposition. The rate of MDHR at OCP and applied potential was examined by SERS techniques on different DAR@Pt(n) surfaces. Based on the SERS results, the effect of COads generated from the MDHR on the CV measurement of MOR was examined. |
| E-mail |
hkborn@naver.com |
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122nd General Meeting of the KCS