Near-infrared-featured broadband CO2 reduction with water to hydrocarbons by surface plasmon

Canyu Hu, Xing Chen, Jingxiang Low, Yaw-Wen Yang, Hao Li, Di Wu, Shuangming Chen, Jianbo Jin, He Li, Huanxin Ju, Chia-Hsin Wang, Zhou Lu, Ran Long (), Li Song and Yujie Xiong ()
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Canyu Hu: University of Science and Technology of China
Xing Chen: Tianjin University
Jingxiang Low: University of Science and Technology of China
Yaw-Wen Yang: National Synchrotron Radiation Research Center
Hao Li: Anhui Normal University
Di Wu: University of Science and Technology of China
Shuangming Chen: University of Science and Technology of China
Jianbo Jin: University of Science and Technology of China
He Li: University of Science and Technology of China
Huanxin Ju: University of Science and Technology of China
Chia-Hsin Wang: National Synchrotron Radiation Research Center
Zhou Lu: Anhui Normal University
Ran Long: University of Science and Technology of China
Li Song: University of Science and Technology of China
Yujie Xiong: University of Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Imitating the natural photosynthesis to synthesize hydrocarbon fuels represents a viable strategy for solar-to-chemical energy conversion, where utilizing low-energy photons, especially near-infrared photons, has been the ultimate yet challenging aim to further improving conversion efficiency. Plasmonic metals have proven their ability in absorbing low-energy photons, however, it remains an obstacle in effectively coupling this energy into reactant molecules. Here we report the broadband plasmon-induced CO2 reduction reaction with water, which achieves a CH4 production rate of 0.55 mmol g−1 h−1 with 100% selectivity to hydrocarbon products under 400 mW cm−2 full-spectrum light illumination and an apparent quantum efficiency of 0.38% at 800 nm illumination. We find that the enhanced local electric field plays an irreplaceable role in efficient multiphoton absorption and selective energy transfer for such an excellent light-driven catalytic performance. This work paves the way to the technique for low-energy photon utilization.

Date: 2023
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DOI: 10.1038/s41467-023-35860-2

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