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Nanoarchitectured metal-organic frameworks-derived hollow carbon nanofiber filter for advanced oxidation process


Carbon materials, especially N-doped carbon materials, have attracted great attentions as one of the most efficient and eco-friendly catalysts for advanced oxidation processes (AOPs). Among various carbon materials, N-doped carbon materials with one-dimensional (1D) hollow structure were especially reported of their superior catalytic performance. A complex synthesis process of 1D hollow carbon however remains as a major challenge in meeting a growing demand for it as a superior carbon-based catalyst. Herein, we demonstrate a facile strategy to synthesize 1D hollow carbon nanofibers (HCNFs) in a scalable manner. In this study, zeolitic imidazolate framework-8 (ZIF-8)/polyacrylonitrile (PAN) fibers were fabricated via electrospinning, and subsequent pyrolysis of the as-prepared ZIF-8/PAN composite nanofibers produced HCNFs. With excellent structural advantages and N-doped composition, HCNFs exhibited a remarkable level of catalytic degradation of tetracycline (TC) in the peroxymonosulfate (PMS) activation system. The electron paramagnetic resonance (EPR) and radical quenching experiments results showed that non-radical process was largely responsible for the enhanced catalytic activity of HCNF-PMS system in TC degradation. Furthermore, the HCNFs also showed a good mechanical flexibility. The catalytic device was then constructed to explore potential applications of HCNF. This study would therefore guide current research on carbon-based catalysts using PMS activation system for environmental remedy into the next level.

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Publication details

The article was received on 23 Mar 2019, accepted on 10 May 2019 and first published on 10 May 2019

Article type: Paper
DOI: 10.1039/C9TA03128F
J. Mater. Chem. A, 2019, Accepted Manuscript

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    Nanoarchitectured metal-organic frameworks-derived hollow carbon nanofiber filter for advanced oxidation process

    C. Wang, J. Kim, M. Kim, H. Lim, M. Zhang, J. You, J. H. Yun, Y. Bando, J. Li and Y. Yamauchi, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA03128F

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