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Titanium dioxide (TiO 2 ) is commonly used as a photocatalyst in the removal of organic pollutants. However, weaknesses of TiO 2  such as fast charge recombination and low visible light usage limit its industrial application. Furthermore, photocatalysts that are lost during the treatment of pollutants create the problem of secondary pollutants. Electrospun-based TiO 2  fiber is a promising alternative to immobilize TiO 2  and to improve its performance in photodegradation. Some strategies have been employed in fabricating the photocatalytic fibers by producing hollow fibers, porous fibers, composite TiO 2  with magnetic materials, graphene oxide, as well as doping TiO 2  with metal. The modification of TiO 2  can improve the absorption of TiO 2  to the visible light area, act as an electron acceptor, provide large surface area, and promote the phase transformation of TiO 2 . The improvement of TiO 2  properties can enhance carrier transfer rate which reduces the recombination and promotes the generation of radicals that potentially degrade organic pollutants. The recyclability of fibers, calcination effect, photocatalytic reactors used, operation parameters involved in photodegradation as well as the commercialization potential of TiO 2  fibers are also discussed in this review.

Electrospun-based TiO 2 nanofibers for organic pollutant photodegradation: a comprehensive review