journal article·2023-01-09

Dye-Anchoring Strategy with a Metal–Organic Framework for a Highly Efficient Visible-Light-Driven Photocatalytic CO2 Reduction through the Solid–Gas Mode

Ou-Yang Yang, Xue-Jing Gao, Guang-Dong Qi, Ye Wang, Wen-Wen Dong, Zheng-Fang Tian, Jun Zhao, Dong-Sheng Li, Qichun Zhang

ACS Applied Energy Materials· Volume 6· Issue 1
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Abstract

The direct solar-driven CO2 conversion to high-value-added chemicals with high selectivity represents an attractive approach to address the energy crisis and environmental pollution. Herein, we report a facile dye-anchoring strategy with a metal–organic framework (MOF) to construct a series of low-cost visible-light-driven composite photocatalysts of rhodamine B (RhB)-sensitized Zr-MOF, x-RhB@Zr-MOF (x = 1–4). Benefiting from the coupling mode of chemical bonding rather than physical adsorption, the RhB molecules were firmly anchored in Zr-MOF, resulting in the improvement of visible-light absorption and the efficient transfer of photogenerated electrons from RhB to Zr-MOF. Significantly, 3-RhB@Zr-MOF exhibits enhanced photocatalytic performance for the reduction of CO2 to CO under visible-light illumination. The evolution rate of CO can reach 10.27 μmol·g–1 in 4 h and the selectivity of >99% without the use of any organic sacrificial agents or photosensitizers, much superior to that of Zr-MOF. This work provides insight that will help in the construction of selective visible-light-driven catalysts for the photoreduction of CO2 through a solid–gas mode.
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Research context

OpenAlex topics: Advanced Photocatalysis Techniques · Metal-Organic Frameworks: Synthesis and Applications · Covalent Organic Framework Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, P. R. China

Hubei Three Gorges Laboratory, Yichang, Hubei 443007, P. R. China

Hubei Key Laboratory of Processing and Application of Catalytic Materials, Huanggang Normal University, Huanggang 438000, P. R. China

Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, SAR 999077, P. R. China

Funding

City University of Hong Kong · National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Hubei Key Laboratory of Processing and Application of Catalytic Materials, Huanggang Normal University · Distinguished Youth Foundation of Hubei province · Hong Kong Institute for Advanced Study, City University of Hong Kong · Program for Innovative Teams of Outstanding Young and Middle-aged Researchers in the Higher Education Institutions of Hubei Province

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