| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
(무기재료1) 차세대 유무기 하이브리드 촉매 연구 개발 동향 I |
| 제목 |
Electrochemical Oxygen Reduction by Atomically Dispersed Pt: Selective Production of H2O2 instead of H2O |
| 초록 |
As the size of the metal cluster decreases to a sub-nanometer scale and ultimately to an atomic level, the catalytic properties can be drastically changed. This can provide unique opportunities for tuning activity and chemoselectivity. In the present work, atomically dispersed Pt catalyst was selectively synthesized via a simple wet-impregnation method on zeolite-templated carbon (ZTC) containing an extra-large amount (up to 17 wt%) of sulfur (S). The abundant S-functionalities and unique carbon structure (i.e., highly curved 3-dimensional networks of graphene nanoribbons) could stabilize a relatively high loading of Pt (5 wt%) in the form of atomically dispersed Pt species. In the oxygen reduction reaction (ORR) under an acidic environment, Pt/S-ZTC showed an onset potential of 0.71 VRHE, close to the thermodynamic potential of H2O2 production (E°O2/H2O2 = 0.69 VSHE) with up to 96 % H2O2 selectivity. |
| 저자 |
최민기 |
| 소속 |
한국과학기술원 |
| 키워드 |
Single atom Pt; electrocatalysis; ORR; H2O2
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| E-Mail |
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