Highly Selective Photoelectroreduction of Carbon Dioxide to Ethanol over Graphene/Silicon Carbide Composites.

Guanghui Feng, Shibin Wang, Shenggang Li, Ruipeng Ge, Xuefei Feng, Junwei Zhang, Yanfang Song, Xiao Dong, Jiazhou Zhang, Gaofeng Zeng, Qiang Zhang, Guijun Ma, Yi-De Chuang, Xixiang Zhang, Jinghua Guo, Yuhan Sun, Wei Wei, Wei Chen

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Using sunlight to produce valuable chemicals and fuels from carbon dioxide (CO2), i.e., artificial photosynthesis (AP) is a promising strategy to achieve solar energy storage and a negative carbon cycle. However, selective synthesis of C2 compounds with a high CO2 conversion rate remains challenging for current AP technologies. We performed CO2 photoelectroreduction over a graphene/silicon carbide (SiC) catalyst under simulated solar irradiation with ethanol (C2H5OH) selectivity of > 99% and a CO2 conversion rate of up to 17.1 mmol∙gcat-1·h-1 with sustained performance. Experimental and theoretical investigations indicated an optimal interfacial layer to facilitate the transfer of photogenerated electrons from the SiC substrate to the few-layer graphene overlayer, which also favored an efficient CO2 to C2H5OH conversion pathway.
Original languageEnglish (US)
JournalAngewandte Chemie (International ed. in English)
DOIs
StatePublished - Feb 14 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-02-17
Acknowledgements: This work was financially supported by the Ministry of Science and Technology of China (National Key R&D Program of China,2022YFA1504604), the National Natural Science Foundation of China (nos. 91745114, 21802160), the “Transformational Technologies for Clean Energy and Demonstration”, Strategic Priority Research Program of the Chinese Academy of Sciences (no. XDA 21000000), the Hundred Talents Program of Chinese Academy of Sciences (no. 2060299), the Youth Innovation Promotion Association of the Chinese Academy of Sciences (no. E224301401), Shanghai Sailing Program (no. 18YF1425700), Shanghai Pujiang Program (no. 20PJ1415200), the Outstanding Young Talent Project of Shanghai Advanced Research Institute, the Chinese Academy of Sciences (no. E254991ZZ1), the Foundation of Key Laboratory of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences (no. KLLCCSE-202207Z, SARI, CAS), Shanghai Functional Platform for Innovation Low Carbon Technology, and the Major Project of the Science and Technology department of Inner Mongolia (no. 2021ZD0020).This work used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231.

ASJC Scopus subject areas

  • General Chemistry
  • Catalysis

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