Volume 57, Issue 51 pp. 16811-16815
Communication

Nickel Metal–Organic Framework Monolayers for Photoreduction of Diluted CO2: Metal-Node-Dependent Activity and Selectivity

Bin Han

Bin Han

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

These authors contributed equally to this work.

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Xinwen Ou

Xinwen Ou

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

These authors contributed equally to this work.

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Ziqi Deng

Ziqi Deng

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

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Yao Song

Yao Song

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

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Chen Tian

Chen Tian

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

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Prof. Dr. Hong Deng

Prof. Dr. Hong Deng

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

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Prof. Dr. Yi-Jun Xu

Prof. Dr. Yi-Jun Xu

State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116 P. R. China

College of Chemistry, New Campus, Fuzhou University, Fuzhou, 350116 P. R. China

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Prof. Dr. Zhang Lin

Corresponding Author

Prof. Dr. Zhang Lin

School of Environment and Energy, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education), South China University of Technology, Guangzhou, P. R. China

Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, South China University of Technology, Guangzhou, 510006 P. R. China

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First published: 06 November 2018
Citations: 465

Graphical Abstract

Doctor node: Photocatalytic conversion of diluted CO2 with high efficiency and selectivity can be achieved on Ni metal–organic framework (MOF) monolayers (Ni MOLs). The initial adsorption of CO2 molecules is the critical step and depends on the nature of the metal node.

Abstract

Photocatalytic conversion of diluted CO2 into solar fuel is highly appealing yet still in its infancy. Herein, we demonstrate the metal-node-dependent performance for photoreduction of diluted CO2 by constructing Ni metal–organic framework (MOF) monolayers (Ni MOLs). In diluted CO2 (10 %), Ni MOLs exhibit a highest apparent quantum yield of 1.96 % with a CO selectivity of 96.8 %, which not only exceeds reported systems in diluted CO2 but also is superior to most catalysts in pure CO2. Whereas isostructural Co MOLs is almost inactive in diluted CO2, indicating the performance is dependent on the metal nodes. Experimental and theoretical investigations show that strong CO2 binding affinity of Ni MOLs is the crucial factor, which stabilizes the Ni-CO2 adducts and facilitates CO2-to-CO conversion.

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