Producing Nano-Porous TiO₂ Fibers by Electrospinning with Phase Separation

Abstract:

TiO₂ photocatalyst plays an important role in the degradation of sewage and cleaning the air. nanoporous TiO₂ fibers have excellent photocatalytic properties due to their high porosity and specific surface area. Based on DMF and alcohol as solvent, nanoporous TiO₂ fibers were produced by electrospinning with phase separation. The spinning dope advance rate, DMF/alcohol ratio and calcination temperature were investigated on the influence of micro-structure, porous structure, phase composition and photocatalytic performance of the nanoporous TiO₂ fibers. It showed that nanoporous anatase TiO₂ fibers had surface pores at 20nm by 550°C calcination. And when the proportion of DMF and alcohol was 1:3, the BET Surface Area of nanoporous TiO₂ fibers was 40.75m²/g. They get photocatalytic degradation rate of 85.2% to 20mg·L^-1 methyl orange solution after 35 min.

• Periodical: Materials Science Forum (Volume 847)
• Pages: 218-223
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.847.218
• Online since: March 2016
• Authors: Zhao Wei Liu, Yu Fei Tang, Kang Zhao, Heng Zhang
• Keywords: Electrostatic Spinning, Nano-Porous TiO₂ Fibers, Phase Separation, Photocatalysis

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