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A confined growth strategy to construct 3DOM SiO2 nanoreactor in-situ embedded Co3O4 nanoparticles catalyst for the catalytic combustion of VOCs: Superior H2O and SO2 resistance

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Abstract

SO2 poisoning is a common problem in the catalytic combustion of volatile organic compounds (VOCs). In this work, we took three-dimensionally ordered macroporous and mesoporous (3DOM) SiO2 as the nanoreactor to protect active sites from SO2 erosion in the catalytic combustion of benzene. Simultaneously, the confined growth of metal active nanoparticles in the multistage pore is also full of challenges. And we successfully confined Co3O4 nanoparticles (NPs) in macroporous and mesoporous channels. Interestingly, the precursors’ growth in the pore was controlled and nanoreactors with different pore sizes were prepared by adjusting the loading amount and preparation methods. It is discovered that the Co3O4 NPs confined in 3DOM SiO2 nanoreactor showed superior sulfur and water resistance. Density functional theory (DFT) calculations verified that the Co-Si catalyst had high SO2 adsorption energy (−0.48 eV), which illustrated that SO2 was hard to attach to the surface of the Co-Si catalyst. The SiO2 nanoreactor had low SO2 adsorption energy (−5.15 eV), which indicated that SO2 was easily absorbed on SiO2 nanoreactor. This illustrated that the SiO2 nanoreactor could protect effectively active sites from SO2 erosion.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 52070182), the DNL Cooperation Found, CAS (No. DNL202004), the Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy (YLU-DNL) (No. 202206), Talents of Innovation and Entrepreneurship Project of Lanzhou, China (No. 2022-RC-26), Major Program of the Lanzhou Institute of Chemical Physics, CAS (No. ZYFZFX-10), and Key talent project of Gansu Province.

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  1. Weigao Han and Shilin Wu contributed equally to this work.

Authors and Affiliations

  1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Weigao Han, Fang Dong, Weiliang Han & Zhicheng Tang

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Weigao Han

  3. Dalian National Laboratory for Clean Energy, Dalian, 116023, China

    Fang Dong

  4. College of Architecture and Environment, Sichuan University, Chengdu, 610000, China

    Shilin Wu, Yinghao Chu & Linghui Su

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  1. Weigao Han
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  3. Fang Dong
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Correspondence to Fang Dong or Zhicheng Tang.

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A confined growth strategy to construct 3DOM SiO2 nanoreactor in-situ embedded Co3O4 nanoparticles catalyst for the catalytic combustion of VOCs: Superior H2O and SO2 resistance

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Han, W., Wu, S., Dong, F. et al. A confined growth strategy to construct 3DOM SiO2 nanoreactor in-situ embedded Co3O4 nanoparticles catalyst for the catalytic combustion of VOCs: Superior H2O and SO2 resistance. Nano Res. 17, 207–220 (2024). https://doi.org/10.1007/s12274-023-5498-0

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