Synthesis of titania fibers by electrospinning and its photocatalytic degradation properties

Yan Lv; Feng Chen; Yuanzheng Tang; Zhigang Chen

doi:10.24294/can.v4i1.1329

Synthesis of titania fibers by electrospinning and its photocatalytic degradation properties

Yan Lv, Feng Chen, Yuanzheng Tang, Zhigang Chen

Article ID: 1329
Vol 4, Issue 1, 2021

VIEWS - 894 (Abstract) 213 (PDF)

Abstract

The electrospinning precursor solution was prepared by dissolving polyvinyl pyrrolidone as template, tetrabutyl titanate as titanium source, and acetic acid as inhibitor. The TiO₂ nanofilms were prepared by precursor solution electrospinning and subsequent calcination. Thermal gravimetric analysis (TG), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and transmission electron microscopy (TEM) were used to characterize and analyze the samples. The influence of technological parameters on spinning fiber morphology was also studied. The results indicate that the TiO₂ nanofibers morphology is good when the parameters are as follows: voltage 1.4×10⁴ V，spinning distance 0.2 m，translational velocity 2.5×10^-3 m·s^-1, flow rate 3×10^-4 m·s^-1, and needle diameter 3×10^-4 m. The diameter of the fibers is about 150 nm. With the 1×10^-4 mol·L^-1 methylene blue solution used as simulated degradation target, the degradation rate is 95.8% after 180 minutes.

Keywords

Titania; Electrospinning; Morphology; Structure; Photocatalytic Degradation

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DOI: https://doi.org/10.24294/can.v4i1.1329