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Effect of g-C3N4 nano-structure on catalytic performance of CoOx/g-C3N4 in catalytic combustion of toluene

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Abstract

A series of graphitic carbon nitrides (g-C3N4) were prepared using different precursors; these g-C3N4-supported CoOx catalysts exhibited different catalytic performances in toluene catalytic combustion reaction. The structure of samples was detected by XRD, TEM, SEM, XPS, H2-TPR, nitrogen adsorption and desorption technique, to build up the structure–performance relationship and uncover the key property of g-C3N4 that mostly influences the catalytic performance of CoOx/g-C3N4. CoOx with average particle size of 12.7 nm supported on g-C3N4 prepared by dicyandiamide showed better catalytic performance than on other supports, 100% toluene conversion could be achieved at ~ 285 °C, characterization results showed that Co was directly connected with N, and the integrity of g-C3N4 sheet affects the dispersion of CoOx; the content of sp2-N (within C=N–C structure) determines the interaction between g-C3N4 and CoOx; these two factors together affect the performance of CoOx/g-C3N4 catalysts in the catalytic combustion of toluene.

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Acknowledgments

We thank for the financial support by Research Program of Science and Technology at Universities of Inner Mongolia Autonomous Region (NJZY19338), Inner Mongolia talent development fund ([2018]-201) and the Research Fund of Xilin Gol Vocational College (ZD2017-06).

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Authors and Affiliations

  1. Lignite Fly Ash Institute of Engineering and Technology, Xilingol Vocational College, Xilinhot, 026000, Inner Mongolia, China

    S.-S. Liu, L.-G. Tao, H.-P. Ding & J. Zhang

  2. Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education and Shanxi Province, Taiyuan, 030024, Shanxi, China

    S.-S. Liu & D.-M. Luo

  3. National Institute of Clean-and-Low-Carbon Energy, Beijing, 120218, China

    X. Yang

  4. Department of Mechanical and Electric Engineering, Xilingol Vocational College, Xilinhot, 026000, Inner Mongolia, China

    C.-X. Tong

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  1. S.-S. Liu
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  2. D.-M. Luo
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  3. X. Yang
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  4. C.-X. Tong
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  5. L.-G. Tao
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  6. H.-P. Ding
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  7. J. Zhang
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Correspondence to S.-S. Liu.

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Editorial responsibility: Fatih ŞEN.

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Liu, SS., Luo, DM., Yang, X. et al. Effect of g-C3N4 nano-structure on catalytic performance of CoOx/g-C3N4 in catalytic combustion of toluene. Int. J. Environ. Sci. Technol. 17, 3055–3064 (2020). https://doi.org/10.1007/s13762-020-02659-3

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  • DOI: https://doi.org/10.1007/s13762-020-02659-3

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