期刊
NATURE COMMUNICATIONS
卷 13, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-022-35450-8
关键词
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资金
- National Key R&D Program of China [2021YFA1500704]
- National Natural Science Foundation of China [22121004, 22038009, 51861125104]
- Natural Science Foundation of Tianjin City [18JCJQJC47500]
- Program of Introducing Talents of Discipline to Universities [B06006]
- Haihe Laboratory of Sustainable Chemical Transformations [CYZC202107]
- Xplorer Prize
This paper describes the construction of a molybdenum-based metal carbide catalyst that promotes the formation and adsorption of oxygen-bound intermediates, resulting in a high Faradaic efficiency of 80.4% for methanol production from carbon dioxide reduction.
The reduction of carbon dioxide using electrochemical cells is an appealing technology to store renewable electricity in a chemical form. The preferential adsorption of oxygen over carbon atoms of intermediates could improve the methanol selectivity due to the retention of C-O bond. However, the adsorbent-surface interaction is mainly related to the d states of transition metals in catalysts, thus it is difficult to promote the formation of oxygen-bound intermediates without affecting the carbon affinity. This paper describes the construction of a molybdenum-based metal carbide catalyst that promotes the formation and adsorption of oxygen-bound intermediates, where the sp states in catalyst are enabled to participate in the bonding of intermediates. A high Faradaic efficiency of 80.4% for methanol is achieved at -1.1V vs. the standard hydrogen electrode.
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