期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-019-11868-5
关键词
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资金
- Austrian Science Fund [FWF-P28167-N34, FWF-P32045-NBL]
- UGC
- SERB [PDF/2017/000676]
- IISER Kolkata, India
- CCNU, P.R. China
- NSFC [B050704]
- '111 project'
- University of South Bohemia
- European Union through the EFRE INTERREG IV ETC-AT-CZ program [M00146]
- Fonds of the Chemical Industry
- Deutsche Forschungsgemeinschaft (Emmy Noether grant) [AP242/2-1, AP242/6-1]
- Fraunhofer Internal Programs - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation-Germany's Excellence Strategy) [390677874]
- Austrian Science Fund (FWF) [P28167] Funding Source: Austrian Science Fund (FWF)
Electrochemical conversion of CO2 to alcohols is one of the most challenging methods of conversion and storage of electrical energy in the form of high-energy fuels. The challenge lies in the catalyst design to enable its real-life implementation. Herein, we demonstrate the synthesis and characterization of a cobalt(III) triphenylphosphine corrole complex, which contains three polyethylene glycol residues attached at the meso-phenyl groups. Electron-donation and therefore reduction of the cobalt from cobalt(III) to cobalt(I) is accompanied by removal of the axial ligand, thus resulting in a square-planar cobalt(I) complex. The cobalt(I) as an electron-rich supernucleophilic d(8)-configurated metal centre, where two electrons occupy and fill up the antibonding d(z)(2) orbital. This orbital possesses high affinity towards electrophiles, allowing for such electronically configurated metals reactions with carbon dioxide. Herein, we report the potential dependent heterogeneous electroreduction of CO2 to ethanol or methanol of an immobilized cobalt A(3)-corrole catalyst system. In moderately acidic aqueous medium (pH = 6.0), the cobalt corrole modified carbon paper electrode exhibits a Faradaic Efficiency (FE%) of 48 % towards ethanol production.
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