Study on graphitic carbon nitride catalysts with Bi and Cu loaded for carbon dioxide photothermal reduction

As a significant technology of CO 2 utilization, artificial CO 2 photoreduction has received more and more attention. Herein, g-C 3 N 4 catalysts modified with Bi and/or Cu for CO 2 photothermal reduction were prepared by solvothermal synthesis and impregnation methods. Performance evaluation and ph...

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Bibliographic Details
Published in:Catalysis science & technology 2024-08
Main Authors: Guan, Bin, Chen, Junyan, Zhuang, Zhongqi, Zhu, Lei, Ma, Zeren, Hu, Xuehan, Zhu, Chenyu, Zhao, Sikai, Shu, Kaiyou, Dang, Hongtao, Huang, Zhen
Format: Article
Language:English
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Summary:As a significant technology of CO 2 utilization, artificial CO 2 photoreduction has received more and more attention. Herein, g-C 3 N 4 catalysts modified with Bi and/or Cu for CO 2 photothermal reduction were prepared by solvothermal synthesis and impregnation methods. Performance evaluation and physicochemical and photo- and thermochemical characterization indicated that Bi and Cu modification effectively enhanced the photo-absorption properties of g-C 3 N 4 catalysts, improving charge transfer efficiency and catalytic performance. Compared with single-metal modification, Bi and Cu co-modification showed a narrower bandgap and more excellent light and CO 2 absorption capacity, suggesting a certain synergistic effect of Bi and Cu co-modification. The alteration of the light absorption properties may be related to the surface plasmon effect of Bi and Cu, and the co-loading of Bi and Cu can exacerbate the effect, which can effectively enhance the photoresponsivity of the catalysts, leading to higher catalytic performance.
ISSN:2044-4753
2044-4761
DOI:10.1039/D4CY00874J