Thin-water-film-enhanced TiO2-based catalyst for CO2 hydrogenation to formic acid

Shaoqin Chen; Siyuan Fang; Zongwei Sun; Zhangyang Li; Chunling Wang; Yun Hang Hu

doi:10.1039/D1CC06441J

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Thin-water-film-enhanced TiO₂-based catalyst for CO₂ hydrogenation to formic acid†

Shaoqin Chen,

^ab Siyuan Fang,^b Zongwei Sun,^a Zhangyang Li,^a Chunling Wang*^a and Yun Hang Hu

*^b

Author affiliations

* Corresponding authors

^a School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
E-mail: wangchunling@sjtu.edu.cn

^b Department of Materials Science and Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA
E-mail: yunhangh@mtu.edu

Abstract

Carbon dioxide (CO₂) hydrogenation can not only mitigate global warming, but also produce value-added chemicals. Herein, we report a novel three-phase catalytic system with an in situ generated and dynamically updated thin water film covered on the noble-metal-free TiO₂-based catalyst for highly efficient CO₂ hydrogenation, realizing a four-time enhancement compared with that with the catalyst suspended in water. The water film plays dual roles by directly participating in the reaction and removing the produced oxygenates (mainly formic acid) from the catalyst surface by dissolution. These results demonstrate an effective design for CO₂ hydrogenation, which will open a new door to three-phase catalysis.

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Article information

DOI: https://doi.org/10.1039/D1CC06441J
Article type: Communication
Submitted: 15 Nov 2021
Accepted: 14 Dec 2021
First published: 14 Dec 2021

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Chem. Commun., 2022,58, 787-790

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Thin-water-film-enhanced TiO₂-based catalyst for CO₂ hydrogenation to formic acid

S. Chen, S. Fang, Z. Sun, Z. Li, C. Wang and Y. H. Hu, Chem. Commun., 2022, 58, 787 DOI: 10.1039/D1CC06441J

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