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Issue 48, 2019
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Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning

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Abstract

One-dimensional (1D) SiC nanostructures have attracted considerable interest owing to their unique structure and excellent performance, but nanostructure entanglement limits their application. In this work, a robust photocatalytic composite SiC@SiO2/carbon nanofiber mat (SiC@CNFMs) is prepared via facile and environmentally friendly blow-spinning (BLS) followed by calcination in absence of metal catalysts. The several hundred micron long as-prepared nanocrystal structures consist of a single-crystalline β-SiC core (diameter between 30–150 nm) and an ultra-thin (8 nm) amorphous SiO2 shell layer. The growth process of the SiC/SiO2 nanofiber is in good agreement with the vapor–solid (VS) mechanism. The synthesized SiC@CNFMs exhibit excellent photodegradation of dyes and due to the utilization of PAN-based carbon nanofiber mats, they show good recycling performance with a dye degradation above 88–95% after 5 cycles. Lastly, the synthesized SiC@CNFMs show high chemical stability under both alkaline and acidic conditions. From these properties, the synthesized SiC@CNFMs show promising potential for wastewater cleaning.

Graphical abstract: Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning

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Publication details

The article was received on 25 Sep 2019, accepted on 13 Nov 2019 and first published on 20 Nov 2019


Article type: Paper
DOI: 10.1039/C9TC05257G
J. Mater. Chem. C, 2019,7, 15233-15242

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    Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning

    Y. Chen, N. Wang, M. Jensen, S. Han, X. Li, W. Li and X. Zhang, J. Mater. Chem. C, 2019, 7, 15233
    DOI: 10.1039/C9TC05257G

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