Abstract
A novel flexible graphitic carbon nitride loaded SiO2 (g-C3N4/SiO2) nanofibrous membrane was fabricated for photocatalytic degradation of dyes. The g-C3N4 nanosheets were directly grown on the electrospun SiO2 nanofiber surface by thermal condensation of urea precursor. X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy detections confirmed the successful preparation of the g-C3N4 nanosheets. The g-C3N4 nanosheets with a few layers in thickness were tightly attached on the SiO2 nanofiber surface. The obtained g-C3N4/SiO2 catalysts exhibited high catalytic performance towards decomposition of Rhodamine B under visible light irradiation. The photocatalytic activity remained above 90% within 80 min illumination even after five cycles. Due to the easy preparation and high photocatalytic performance, as well as convenient collection for reuse, the obtained g-C3N4/SiO2 hybrid membranes are promising catalysts for practical application.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (21501140, 21403165), Science and Technology Department of Shaanxi Province (2015JQ2047, 2016JQ2002) and the Key Innovation Team of Shaanxi Province (2014KCT-04).
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Chang, MJ., Cui, WN., Liu, J. et al. Fabrication and photocatalytic properties of flexible g-C3N4/SiO2 composite membrane by electrospinning method. J Mater Sci: Mater Electron 29, 6771–6778 (2018). https://doi.org/10.1007/s10854-018-8663-6
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DOI: https://doi.org/10.1007/s10854-018-8663-6