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    Synergy between Confined Cobalt Centers and Oxygen Defects on α-Fe 2 O 3 Platelets for Efficient Photocatalytic CO 2 Reduction

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    Name:
    solr.202100833.pdf
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    Format:
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    Description:
    Accepted manuscript
    Embargo End Date:
    2022-11-03
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    Type
    Article
    Authors
    Yang, Gaoliang
    Li, Yunxiang
    Wang, Qi
    Wang, Xusheng
    Zuo, Shouwei
    Zhang, Huabin cc
    Ren, Xiaohui
    He, Yu
    Ichihara, Fumihiko
    Ye, Jinhua
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2021-11-11
    Embargo End Date
    2022-11-03
    Submitted Date
    2021-10-07
    Permanent link to this record
    http://hdl.handle.net/10754/673120
    
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    Abstract
    Cocatalysts loading is one of the most effective strategies for boosting CO2 photoreduction. Thus, constructing robust active sites with a specific chemical environment on the cocatalyst to selectively convert CO2 to chemical fuels is highly desirable, but remains challenging. Herein, α-Fe2O3 platelets modulated with confined Co centers and oxygen defects are designed as efficient cocatalysts for photocatalytic CO2 reduction with superior activity and CO selectivity. The highly dispersed Co centers can proceed the catalytic processes efficiently as the reaction sites, while the oxygen vacancies enable to enhance the CO2 adsorption/activation. After integrating together, the oxygen defects provide vigorous assistances to promote the catalytic activity of confined Co sites, leading to facilitated charge transfer and reduced energy barriers for CO2 photoreduction. As a result, the optimized catalyst achieves a CO generation rate of 37.8 μmol h−1 with an impressive selectivity of 80.2%, as well as remarkable durability for photocatalytic CO2 reduction. This work demonstrates new insights of developing robust catalysts by controlling confined active sites together with defects engineering for efficient photocatalytic CO2 conversion.
    Citation
    Yang, G., Li, Y., Wang, Q., Wang, X., Zuo, S., Zhang, H., … Ye, J. (2021). Synergy between Confined Cobalt Centers and Oxygen Defects on α-Fe 2 O 3 Platelets for Efficient Photocatalytic CO 2 Reduction. Solar RRL. doi:10.1002/solr.202100833
    Publisher
    Wiley
    Journal
    Solar RRL
    DOI
    10.1002/solr.202100833
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/solr.202100833
    ae974a485f413a2113503eed53cd6c53
    10.1002/solr.202100833
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

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