A nonmetallic plasmonic catalyst for photothermal CO2 flow conversion with high activity, selectivity and durability

Xueying Wan, Yifan Li, Yihong Chen, Jun Ma, Ying-Ao Liu, En-Dian Zhao, Yadi Gu, Yilin Zhao, Yi Cui, Rongtan Li, Dong Liu (), Ran Long, Kim Meow Liew and Yujie Xiong ()
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Xueying Wan: University of Science and Technology of China
Yifan Li: Chinese Academy of Sciences
Yihong Chen: University of Science and Technology of China
Jun Ma: University of Science and Technology of China
Ying-Ao Liu: University of Science and Technology of China
En-Dian Zhao: University of Science and Technology of China
Yadi Gu: University of Science and Technology of China
Yilin Zhao: University of Science and Technology of China
Yi Cui: Chinese Academy of Sciences
Rongtan Li: Chinese Academy of Sciences
Dong Liu: University of Science and Technology of China
Ran Long: University of Science and Technology of China
Kim Meow Liew: University of Science and Technology of China
Yujie Xiong: University of Science and Technology of China

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract The meticulous design of active sites and light absorbers holds the key to the development of high-performance photothermal catalysts for CO2 hydrogenation. Here, we report a nonmetallic plasmonic catalyst of Mo2N/MoO2-x nanosheets by integrating a localized surface plasmon resonance effect with two distinct types of active sites for CO2 hydrogenation. Leveraging the synergism of dual active sites, H2 and CO2 molecules can be simultaneously adsorbed and activated on N atom and O vacancy, respectively. Meanwhile, the plasmonic effect of this noble-metal-free catalyst signifies its promising ability to convert photon energy into localized heat. Consequently, Mo2N/MoO2-x nanosheets exhibit remarkable photothermal catalytic performance in reverse water-gas shift reaction. Under continuous full-spectrum light irradiation (3 W·cm−2) for a duration of 168 h, the nanosheets achieve a CO yield rate of 355 mmol·gcat−1·h−1 in a flow reactor with a selectivity exceeding 99%. This work offers valuable insights into the precise design of noble-metal-free active sites and the development of plasmonic catalysts for reducing carbon footprints.

Date: 2024
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DOI: 10.1038/s41467-024-45516-4

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