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论文类型：期刊论文
发表时间：2017-12-04
发表刊物：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
收录刊物：SCIE、EI、PubMed、Scopus
卷号：56
期号：49
页面范围：15607-15611
ISSN号：1433-7851
关键字：CO2 reduction; doped nanodiamond; electrocatalysis; ethanol; heterogeneous catalysis
摘要：Electrochemical reduction of CO2 to ethanol, a clean and renewable liquid fuel with high heating value, is an attractive strategy for global warming mitigation and resource utilization. However, converting CO2 to ethanol remains great challenge due to the low activity, poor product selectivity and stability of electrocatalysts. Here, the B- and N-co-doped nanodiamond (BND) was reported as an efficient and stable electrode for selective reduction of CO2 to ethanol. Good ethanol selectivity was achieved on the BND with high Faradaic efficiency of 93.2% (-1.0V vs. RHE), which overcame the limitation of low selectivity for multicarbon or high heating value fuels. Its superior performance was mainly originated from the synergistic effect of B and N co-doping, high N content and overpotential for hydrogen evolution. The possible pathway for CO2 reduction revealed by DFT computation was CO2 ->*COOH ->*CO ->*COCO ->*COCH2OH ->*CH2OCH2OH -> CH3CH2OH.