| 학회 |
한국화학공학회 |
| 학술대회 |
2018년 봄 (04/25 ~ 04/27, 창원컨벤션센터) |
| 권호 |
24권 1호, p.1054 |
| 발표분야 |
Meet the Young Researcher Poster Session(Post-Doc.급 연구원) |
| 제목 |
Electrochemical CO2 reduction to formate via oxygen bidentate intermediate on high-index planes of dendritic Bi catalyst |
| 초록 |
Conversion of CO2 and water to value-added chemicals powered by renewable electricity is a promising strategy for sustainable industrial development. For the success of this approach, in-depth understanding of catalysis on CO2 converion is firstly required because it involves highly complex multistep reactions. Herein, we report a rational design of a hierarchical Bi dendrite catalyst for an efficient CO2 to formate production. A high reactivity and a stable performance during long-term operation were achieved with the Bi dendrite (∼89% at −0.74 VRHE during 12 h). Density functional theory (DFT) is used to investigate three possible reaction pathways in terms of surface intermediate, and the one via *OCOH surface intermediate is calculated to be the most energetically feasible. DFT calculations further elucidate the plane-dependent catalytic activity and conclude that the high-index planes developed on the Bi dendrite are responsible for the outstanding performance of Bi dendrite. We expect that our experimental and theoretical study will provide a fundamental guideline for the CO2-to-formate conversion pathway as well as design principles for enhancing the catalytic performance. |
| 저자 |
원다혜1, 고재현1, 엄태대형2, 김형준2, 황윤정1, 민병권1
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| 소속 |
1KIST, 2KAIST |
| 키워드 |
CO2전환; 전기화학촉매; DFT
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| E-Mail |
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| 원문파일 |
초록 보기 |
