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Electrospinning synthesis of N-doped TiO2 fiber membranes and its enhanced photocatalysis performance

Jie Gao, Lingfan Zhang, Junchao Qian, Feng Chen, and Wenqing Zhang

School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China

 

E-mail: chenfeng@mail.usts.edu.cn

Received: 22 April 2020  Accepted: 11 July 2020

Abstract:

N-doped TiO2 fiber membranes were prepared by electrospinning method and adsorptive chitosan was added as a nitrogen source. The obtained TiO2 fiber membranes were analyzed by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The results show that the film has adsorption properties; furthermore, the morphology of the TiO2 fiber with a chitosan content of 0.5 g after calcination provides the best catalytic performance; An anatase–rutile titania was found in the oxidized fiber film found in the Raman spectrum TiO2; XPS demonstrated that the introduction of chitosan could replace N atom with partial lattice oxygen in TiO2. Moreover, the degradation rate of methylene blue of the material was about 60–80% after 4-h reaction, and the maximum degradation rate was achieved by nanofiber film with chitosan concentration of 0.5 g.

Keywords: Chitosan fiber membrane; N-doped TiO2; Photocatalysis performance; Waste water treatment

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01286-z

 

Chemical Papers 75 (1) 115–122 (2021)

Sunday, June 26, 2022

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