Contact-electro-catalytic CO2 reduction from ambient air

Nannan Wang, Wenbin Jiang, Jing Yang, Haisong Feng, Youbin Zheng, Sheng Wang, Bofan Li, Jerry Zhi Xiong Heng, Wai Chung Ong, Hui Ru Tan, Yong-Wei Zhang, Daoai Wang (), Enyi Ye () and Zibiao Li ()
Additional contact information
Nannan Wang: Technology and Research (A*STAR)
Wenbin Jiang: Technology and Research (A*STAR)
Jing Yang: Technology and Research (A*STAR)
Haisong Feng: Technology and Research (A*STAR)
Youbin Zheng: Brownlow Hill
Sheng Wang: Technology and Research (A*STAR)
Bofan Li: Technology and Research (A*STAR)
Jerry Zhi Xiong Heng: Technology and Research (A*STAR)
Wai Chung Ong: Technology and Research (A*STAR)
Hui Ru Tan: Technology and Research (A*STAR)
Yong-Wei Zhang: Technology and Research (A*STAR)
Daoai Wang: Chinese Academy of Sciences
Enyi Ye: Technology and Research (A*STAR)
Zibiao Li: Technology and Research (A*STAR)

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Traditional catalytic techniques often encounter obstacles in the search for sustainable solutions for converting CO2 into value-added products because of their high energy consumption and expensive catalysts. Here, we introduce a contact-electro-catalysis approach for CO2 reduction reaction, achieving a CO Faradaic efficiency of 96.24%. The contact-electro-catalysis is driven by a triboelectric nanogenerator consisting of electrospun polyvinylidene fluoride loaded with single Cu atoms-anchored polymeric carbon nitride (Cu-PCN) catalysts and quaternized cellulose nanofibers (CNF). Mechanistic investigation reveals that the single Cu atoms on Cu-PCN can effectively enrich electrons during contact electrification, facilitating electron transfer upon their contact with CO2 adsorbed on quaternized CNF. Furthermore, the strong adsorption of CO2 on quaternized CNF allows efficient CO2 capture at low concentrations, thus enabling the CO2 reduction reaction in the ambient air. Compared to the state-of-the-art air-based CO2 reduction technologies, contact-electro-catalysis achieves a superior CO yield of 33 μmol g−1 h−1. This technique provides a solution for reducing airborne CO2 emissions while advancing chemical sustainability strategy.

Date: 2024
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DOI: 10.1038/s41467-024-50118-1

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