期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 3, 页码 871-874出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201308657
关键词
boron; CO2 reduction; electrochemistry; formaldehyde; seawater
资金
- JST, CREST
The catalytic, electrocatalytic, or photocatalytic conversion of CO2 into useful chemicals in high yield for industrial applications has so far proven difficult. Herein, we present our work on the electrochemical reduction of CO2 in seawater using a boron-doped diamond (BDD) electrode under ambient conditions to produce formaldehyde. This method overcomes the usual limitation of the low yield of higher-order products, and also reduces the generation of H-2. In comparison with other electrode materials, BDD electrodes have a wide potential window and high electrochemical stability, and, moreover, exhibit very high Faradaic efficiency (74%) for the production of formaldehyde, using either methanol, aqueous NaCl, or seawater as the electrolyte. The high Faradaic efficiency is attributed to the sp(3)-bonded carbon of the BDD. Our results have wide ranging implications for the efficient and cost-effective conversion of CO2.
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