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

Yang Chen, Ning Wang*, Martin Jensen, Shan Han, Xianfeng Li, Wei Li, Xingxiang Zhang

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

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.

Original languageEnglish
JournalJournal of Materials Chemistry C
Volume7
Pages (from-to)15233
Number of pages15,242
ISSN2050-7526
DOIs
Publication statusPublished - 2019

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Carbon nanofibers
Catalysts
Composite materials
Nanostructures
Coloring Agents
Dyes
Chemical stability
Photodegradation
Nanofibers
Calcination
Nanocrystals
Recycling
Cleaning
Wastewater
Metals
Vapors
Crystalline materials
Degradation

Cite this

Chen, Yang ; Wang, Ning ; Jensen, Martin ; Han, Shan ; Li, Xianfeng ; Li, Wei ; Zhang, Xingxiang. / Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning. In: Journal of Materials Chemistry C. 2019 ; Vol. 7. pp. 15233.
@article{ff6c03952c054cd3b53ee3f41c9d9d96,
title = "Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning",
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.",
author = "Yang Chen and Ning Wang and Martin Jensen and Shan Han and Xianfeng Li and Wei Li and Xingxiang Zhang",
year = "2019",
doi = "10.1039/c9tc05257g",
language = "English",
volume = "7",
pages = "15233",
journal = "Journal of Materials Chemistry C",
issn = "2050-7526",
publisher = "R S C Publications",

}

Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning. / Chen, Yang; Wang, Ning; Jensen, Martin; Han, Shan; Li, Xianfeng; Li, Wei; Zhang, Xingxiang.

In: Journal of Materials Chemistry C, Vol. 7, 2019, p. 15233.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Catalyst-free large-scale synthesis of composite SiC@SiO2/carbon nanofiber mats by blow-spinning

AU - Chen, Yang

AU - Wang, Ning

AU - Jensen, Martin

AU - Han, Shan

AU - Li, Xianfeng

AU - Li, Wei

AU - Zhang, Xingxiang

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

U2 - 10.1039/c9tc05257g

DO - 10.1039/c9tc05257g

M3 - Journal article

VL - 7

SP - 15233

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

SN - 2050-7526

ER -