Abstract
The photocatalytic activity of TiO2 nanofibers immobilized on quartz substrates was investigated by evaluating the decomposition of organic pollutants. TiO2 nanofibers were synthesized by electrospinning the Ti-precursor/polymer mixture solution, followed by hot-pressing for enhancing the adhesion of TiO2-nanofiber films to the substrates. TiO2 started to crystalize in the anatase form at 500 °C and reached the optimal photocatalytic anatase/rutile phase ratio of 70:30 at a calcination temperature of 600 °C. The TiO2-nanofiber film was demonstrated to be an efficient photocatalyst by ranitidine decomposition under UV illumination and was proven to have a comparable photocatalytic activity with the well-known Degussa P25 nanoparticulate photocatalyst and excellent recyclability during 10 cycles of photocatalytic operation, indicating no loss of TiO2 nanofibers during photocatalytic operations.
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This research was supported, in part, by the Korea Ministry of Environment as a “Converging Technology Project” (191-101-001) and by a KIST project (2E22173).
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Choi, K.J., Hong, S.W. Preparation of TiO2 nanofibers immobilized on quartz substrate by electrospinning for photocatalytic degradation of ranitidine. Res Chem Intermed 38, 1161–1169 (2012). https://doi.org/10.1007/s11164-011-0455-z
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DOI: https://doi.org/10.1007/s11164-011-0455-z