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Published in: Journal of Nanoparticle Research 7/2019

01-07-2019 | Research Paper

Fabrication of Au functionalized TiO2 nanofibers for photocatalytic application

Authors: Xiaojiao Yang, Vincent Salles, Mathieu Maillard, Yusuf Valentino Kaneti, Minsu Liu, Catherine Journet, Xuchuan Jiang, Ying Liu, Arnaud Brioude

Published in: Journal of Nanoparticle Research | Issue 7/2019

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Abstract

Pristine titanium dioxide (TiO2) and gold (Au)-doped TiO2 (TiO2–Au) composite nanofibers (NFs) with different Au contents were fabricated by electrospinning. The thermal behavior of the as-spun composite precursor NFs were analyzed and characterized. Photocatalytic reactions were performed with methyl blue (MB) aqueous solution under UV–Vis and different irradiation wavelengths (including 360 nm, 528 nm, and 360 nm and 528 nm together). As a result, the morphology and the structure of TiO2–Au composite NFs were significantly influenced by calcination temperature, leading to the controllable phase ratio of anatase and rutile in TiO2. TiO2–Au composite NFs, with an average diameter of 171 nm containing Au crystals of about 10 nm, exhibited enhanced photocatalytic efficiency toward the MB, compared to that of commercial P25 (a multiphase TiO2 98% anatase and 2% rutile). The corresponding degradation level reached 95% after 10 min. When irradiated with light having different wavelengths, the TiO2–Au composite NFs catalyst had the best performance under 360 nm and 528 nm together, indicating that Au NPs functionalized TiO2 NFs can enhance the photocatalysis from UV range to visible range. The mechanism of photocatalytic reactions under different irradiations is discussed in the present paper.

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Appendix
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Metadata
Title
Fabrication of Au functionalized TiO2 nanofibers for photocatalytic application
Authors
Xiaojiao Yang
Vincent Salles
Mathieu Maillard
Yusuf Valentino Kaneti
Minsu Liu
Catherine Journet
Xuchuan Jiang
Ying Liu
Arnaud Brioude
Publication date
01-07-2019
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 7/2019
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-019-4600-8

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