Feng, Guanghui; Li, Guihua; Mao, Jianing; Dong, Xiao; Li, Shoujie; Zhu, Chang; Wu, Gangfeng; Chen, Aohui; Wei, Yiheng; Liu, Xiaohu; Wang, Jiangjiang; Song, Yanfang; Wei, Wei; Chen, Wei

CATALYSIS TODAY

2024, 430, 1873-4308

Feng, Guanghui; Li, Guihua; Mao, Jianing; Dong, Xiao; Li, Shoujie; Zhu, Chang; Wu, Gangfeng; Chen, Aohui; Wei, Yiheng; Liu, Xiaohu; Wang, Jiangjiang; Song, Yanfang; Wei, Wei; Chen, Wei

Artificial photosynthesis, which utilizes sunlight to produce value-added chemicals and fuels from CO2, is a promising strategy to storage fluctuating solar energy and to realize zero carbon cycle simultaneously. While selective C2+ production via CO2 photoelectrocatalytic conversion remains a challenge due to the sluggish C -C coupling kinetics over current artificial photosynthesis catalysts. Herein, we present a carbon @ silicon carbide (C@SiC) catalyst for ambient CO2 photoelectric reduction under simulated solar irradiation, giving a CO2 conversion rate of 487 mu mol center dot gcat - 1 center dot h- 1 with an ethanol selectivity of 87.8%. The optimal sp2/sp3 carbon ratio of carbon layer not only facilitates the photo -generated electrons transfer from SiC to carbon layer, but also favors the C -C coupling kinetics of key intermediates for efficient CO2 to ethanol conversion.