Photocatalytic degradation of methyl orange by sol-gel TiO2 films

Ćurković, Lidija and Ljubas, Davor and Marinović, Veronika and Babić, Sandra and Čizmić, Mirta and Majić Renjo, Marijana (2016) Photocatalytic degradation of methyl orange by sol-gel TiO2 films. = Photocatalytic degradation of methyl orange by sol-gel TiO2 films. In: The 48th International October Conference on Mining and Metallurgy, 28.09.-01.10.2016., Bor, Srbija.

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The photocatalytic degradation of the synthetic textile dye Methyl Orange (MO, C.I. Acid Orange 52) using nanostructured sol-gel TiO2 films as photocatalyst was studied. Two nanostructured TiO2 films were prepared by sol-gel process and the dip-coating technique with and without addition of polyethylene glycol (PEG) in sol as a structure-directing agent. Influence of initial MO concentration in aqueous solution (0.0125 mmol L-1, 0.025 mmol L-1 and 0.05 mmol L-1) ; TiO2 films (with and without of addition PEG in sol) and sources of UV radiation (predominantly 254 (UV-C) and 365 nm (UV-A)) on decolorization efficiency was investigated. In the presence of TiO2 film UV-C radiation showed higher degradation efficiency for MO than UV-A radiation. Also, UV-C radiation without TiO2 photocatalyst was capable of degrading MO, while UV-A radiation alone did not show a potential for dyes degradation. Higher photoactivity showed TiO2 film with addition of PEG.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): photocatalytic degradation ; immobilized TiO2 ; Methyl Orange ; UV radiation
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 1000 Department of Materials > 1010 Chair of Materials and Tribology
500 Department of Energy, Power Engineering and Environment > 540 Chair of Water and Environmental Engineering
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 29 Aug 2017 13:13
Last Modified: 21 Feb 2018 14:05

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