journal article·2024-07-01

Metal-Based Ionic Liquid Induced Strategy for Loading Single Atoms and the Coordination Mode Effect on CO2 Photoreduction

Mei Zhang, Yao Wu, Xingwang Zhu, Pin Song, Hailong Chen, Jun Xiong, Jun Di

ACS Materials Letters· Volume 6· Issue 7
Publisher page

Abstract

The effect of single atom positions and coordination environments on photocatalytic performance is not clear. Herein, Co single atoms with surface coordination or lattice coordination mode in Bi 24 O 31 Br 10 atomic layers are presented for CO 2 photoreduction. A novel strategy based on metal-based ionic liquids is developed to prepare stable surface single atom tuned catalysts. In contrast to high-coordinated lattice-doped Co single atoms, the low-coordinated Co single atoms loaded on the catalyst surface play a crucial role in decreasing the activation energy and rate-limiting step energy barriers. The surface-modified Co single atoms work as a polarization center to drive photogenerated electron migration, accelerate reaction kinetics, and enhance CO 2 reduction activity. Benefiting from these features, Co sur -Bi 24 O 31 Br 10 exhibits a more enhanced CO 2 photoreduction performance than Bi 24 O 31 Br 10 and Co lat -Bi 24 O 31 Br 10 . This work provides insight into the effect of positions of single atoms on photocatalytic behavior and offers a strategy to load other low-coordinated surface metal single atoms.
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Research context

OpenAlex topics: Advanced Photocatalysis Techniques · Electronic and Structural Properties of Oxides · Catalytic Processes in Materials Science

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

Affiliations

Institute for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China

School of Materials Science & Engineering, Nanyang Technological University, Singapore 639798, Singapore

College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, P. R. China

Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China

Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China

School of Chemistry and Chemical Engineering, National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

Funding

Jiangsu University · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Jiangsu Specially Appointed Professorship

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