CPC B01J 31/38 (2013.01) [B01J 21/063 (2013.01); B01J 23/06 (2013.01); B01J 23/42 (2013.01); B01J 31/1691 (2013.01); B01J 35/39 (2024.01); B01J 35/613 (2024.01); B01J 35/615 (2024.01); B01J 37/082 (2013.01); B01J 37/086 (2013.01); C02F 1/32 (2013.01); C02F 1/725 (2013.01); C04B 35/62259 (2013.01); C04B 35/624 (2013.01); C04B 35/62675 (2013.01); C04B 35/62844 (2013.01); D01D 5/003 (2013.01); B01J 35/23 (2024.01); B01J 35/58 (2024.01); B01J 37/036 (2013.01); C02F 2305/08 (2013.01); C02F 2305/10 (2013.01); C04B 2235/5264 (2013.01); C04B 2235/5409 (2013.01); C04B 2235/85 (2013.01); Y02W 10/37 (2015.05)] | 20 Claims |
1. A method of forming photocatalytic titanium oxide fibers, comprising:
forming a polymeric suspension of titanium oxide sol-gel precursor;
electrospinning the polymeric suspension to form a titanium oxide fibrous layer; and
calcining the titanium oxide fibrous layer, to produce the photocatalytic titanium oxide fibers comprising a distinct rutile phase and anatase phase comprising a ratio of rutile phase to anatase phase of at least 3:97,
wherein the photocatalytic titanium oxide fibers are photoexcitable to produce electron-hole pairs with an ability to form reactive radical species of proximate molecules from both the conduction band and the valence band,
the rutile phase being adapted to absorb photons, form hydroxyl radicals and hydrogen anions from surface absorbed water, and to transfer electrons to the anatase phase, and
the anatase phase being adapted to absorb photons, receive electrons from the rutile phase, and form superoxide radicals from surface absorbed oxygen.
|