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Research Article

Ru(bpy)32+-sensitized {001} facets LiCoO2 nanosheets catalyzed CO2 reduction reaction with 100% carbonaceous products

Shuaiyu Jiang1,§, Junxian Liu1,§, Kun Zhao1( ), Dandan Cui2, Porun Liu1( ), Huajie Yin1, Mohammad Al-Mamun1, Sean E. Lowe1, Weiping Zhang3, Yu Lin Zhong1, Jun Chen2, Yun Wang1, Dan Wang4, Huijun Zhao1( )
Centre for Catalysis and Clean Energy Gold Coast campus, Griffith UniversityQLD 4222 Australia
Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science University of Wollongong, WollongongNSW 2500 Australia
Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control Guangdong University of TechnologyGuangzhou 510006 China
State Key Laboratory of Biochemical Engineering, CAS Centre for Excellence in Nanoscience, Institute of Process Engineering Chinese Academy of ScienceBeijing 100190 China

§ Shuaiyu Jiang and Junxian Liu contributed equally to this work.

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Abstract

Photosensitized heterogeneous CO2 reduction (PHCR) has emerged as a promising means to convert CO2 into valuable chemicals, however, challenged by the relatively low carbonaceous product selectivity caused by the competing hydrogen evolution reaction (HER). Here, we report a PHCR system that couples Ru(bpy)32+ photosensitizer with {001} faceted LiCoO2 nanosheets photocatalyst to simultaneously yield 21.2 and 722 μmol·g−1·h−1 of CO, and 4.42 and 108 μmol·g−1·h−1 of CH4 under the visible light and the simulated sunlight irradiations, respectively, with completely suppressed HER. The experimental and theoretical studies reveal that the favored CO2 adsorption on the exposed Li sites on {001} faceted LiCoO2 surface is responsible for the completely suppressed HER.

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Keywords

homogeneous–heterogeneous catalysis systemultrathin LiCoO2 nanosheetsphotocatalytic CO2 reductionsuppressed hydrogen evolution reaction

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Nano Research
Volume 15 Issue 2,
February 2022
Pages 1061-1068
DOI: 10.1007/s12274-021-3599-1

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Cite this article:
Jiang S, Liu J, Zhao K, et al. Ru(bpy)32+-sensitized {001} facets LiCoO2 nanosheets catalyzed CO2 reduction reaction with 100% carbonaceous products. Nano Research, 2022, 15(2): 1061-1068. https://doi.org/10.1007/s12274-021-3599-1
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Photocatalysis

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Received: 08 April 2021
Revised: 16 May 2021
Accepted: 18 May 2021
Published: 10 July 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021