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Highly selective and efficient photocatalytic NO removal: Charge carrier kinetics and interface molecular process

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Abstract

The widespread nitrogen oxides (NOx, mainly in NO) in the atmosphere have threatened human health and ecological environment. The dilute NO (ppb) is difficult to efficiently remove via the traditional process due to its characteristics of low concentration, wide range, large total amount, etc. Photocatalysis can utilize solar energy to purify NO pollutants under mild conditions, but its application is limited due to the low selectivity of nitrate and poor activity of NO removal. The underlying reason is that the interface mechanism of NO oxidation is not clearly understood, which leads to the inability to accurately regulate the NO oxidation process. Herein, the recent advances in the photocatalytic oxidation of NO are summarized. Firstly, the common strategies to effectively regulate carrier dynamics such as morphology control, facet engineering, defect engineering, plasma coupling, heterojunction and single-atom catalysts are discussed. Secondly, the progress of enhancing the adsorption and activation of reactants such as NO and O2 during NO oxidation is described in detail, and the corresponding NO oxidation mechanisms are enumerated. Finally, the challenges and prospects of photocatalytic NO oxidation are presented in term of nanotechnology for air pollution control. This review can shed light on the interface mechanism of NO oxidation and provide illuminating information on designing novel catalysts for efficient NOx control.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 22022608, 21876113, 22176127, 21261140333, 22106105 and 62071300), the Shanghai Engineering Research Center of Green Energy Chemical Engineering (No. 18DZ2254200), “111” Innovation and Talent Recruitment Base on Photochemical and Energy Materials (No. D18020), Shanghai Government (Nos. 22010503400, 18SG41 and YDZX20213100003002), Shanghai Scientific and Technological Innovation Project (No. 21DZ1206300) and Shanghai Sailing Program (No. 22YF1430400).

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  1. Huan Shang and Hongbao Jia contributed equally to this work.

Authors and Affiliations

  1. School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China

    Huan Shang, Hongbao Jia, Pengpeng Li, Wenbin Zhang, Shuning Xiao, Ding Wang & Guisheng Li

  2. The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai, 200234, China

    Huan Shang, Shuangjun Li, Qing Wang & Dieqing Zhang

  3. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Hao Li

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  4. Hao Li
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  11. Dieqing Zhang
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Correspondence to Dieqing Zhang.

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Shang, H., Jia, H., Li, P. et al. Highly selective and efficient photocatalytic NO removal: Charge carrier kinetics and interface molecular process. Nano Res. 17, 1003–1026 (2024). https://doi.org/10.1007/s12274-023-6014-2

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  • DOI: https://doi.org/10.1007/s12274-023-6014-2

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