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Nano Research 2023, 16(8): 11018-11029 https://doi.org/10.1007/s12274-023-5781-0
Research Article | Issue | Published: 13 June 2023

Continuous polypyrrole nanotubes encapsulated Co3O4 nanoparticles with oxygen vacancies and electron transport channels boosting peroxymonosulfate activation

Show Author's Information Dingyang Chen,§,  Wanning Wu,§,  Xinyue Zhao,  Danyang Feng( ),  Rui Zhao( ),  Guangshan Zhu
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China

§ Dingyang Chen and Wanning Wu contributed equally to this work.

Keywords:
Co3O4, polypyrrole (PPy) nanotube, peroxymonosulfate (PMS), tetracycline (TC) degradation
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CatalystsElectrospinningShells (structures)
Cite this article:
Chen D, Wu W, Zhao X, et al. Continuous polypyrrole nanotubes encapsulated Co3O4 nanoparticles with oxygen vacancies and electron transport channels boosting peroxymonosulfate activation. Nano Research, 2023, 16(8): 11018-11029. https://doi.org/10.1007/s12274-023-5781-0
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Abstract Full text Electronic supplementary material About this article

Co3O4 particles are promising heterogeneous catalysts for peroxymonosulfate (PMS) activation; whereas they still surfer from the extensive agglomeration, serious Co leaching, poor electronic conductivity, and difficult recovery. Herein, a novel hybrid nanoarchitectonic constructed by encapsulating Co3O4 nanoparticles into continuous polypyrrole (PPy) nanotubes (Co3O4@PPy hybrids) was developed using electrospun fibers as the templates, which boosted the catalytic degradation toward tetracycline (TC). The continuous polypyrrole nanotubes could provide the confined spaces, offer effective electron transfer pathway, suppress cobalt ion loss, facilitate the oxygen vacancy (Ovac) formation, and accelerate the Co2+/Co3+ cycles. Co3O4@PPy hybrids thereby exhibited a remarkably enhanced catalytic activity with the TC degradation efficiency of 97.2% (kobs = 0.244 min−1) within 20 min and total organic carbon (TOC) removal rate of 66.8%. Furthermore, the recycle test, real natural water treatment, and fluidized-column catalytic experiments indicated the potential of Co3O4@PPy hybrids in the practical large-scale applications.


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Electronic supplementary material
About this article

Continuous polypyrrole nanotubes encapsulated Co3O4 nanoparticles with oxygen vacancies and electron transport channels boosting peroxymonosulfate activation

Show Author's information Dingyang Chen,§, Wanning Wu,§, Xinyue Zhao, Danyang Feng( ), Rui Zhao( ), Guangshan Zhu
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China

§ Dingyang Chen and Wanning Wu contributed equally to this work.

Abstract

Co3O4 particles are promising heterogeneous catalysts for peroxymonosulfate (PMS) activation; whereas they still surfer from the extensive agglomeration, serious Co leaching, poor electronic conductivity, and difficult recovery. Herein, a novel hybrid nanoarchitectonic constructed by encapsulating Co3O4 nanoparticles into continuous polypyrrole (PPy) nanotubes (Co3O4@PPy hybrids) was developed using electrospun fibers as the templates, which boosted the catalytic degradation toward tetracycline (TC). The continuous polypyrrole nanotubes could provide the confined spaces, offer effective electron transfer pathway, suppress cobalt ion loss, facilitate the oxygen vacancy (Ovac) formation, and accelerate the Co2+/Co3+ cycles. Co3O4@PPy hybrids thereby exhibited a remarkably enhanced catalytic activity with the TC degradation efficiency of 97.2% (kobs = 0.244 min−1) within 20 min and total organic carbon (TOC) removal rate of 66.8%. Furthermore, the recycle test, real natural water treatment, and fluidized-column catalytic experiments indicated the potential of Co3O4@PPy hybrids in the practical large-scale applications.

Keywords: Co3O4, polypyrrole (PPy) nanotube, peroxymonosulfate (PMS), tetracycline (TC) degradation

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Publication history
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Acknowledgements

Publication history

Received: 20 March 2023
Revised: 02 April 2023
Accepted: 25 April 2023
Published: 13 June 2023
Issue date: August 2023

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This work was financially supported by the National Key R&D Program of China (No. 2022YFB3805900), National Natural Science Foundation of China (Nos. 52003040, 22131004, and 52273055), Natural Science Foundation of Department of Science and Technology of Jilin Province (Nos. YDZJ202101ZYTS060 and 20210201012GX), and the “111” project (No. B18012).

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