Photocatalytic degradation of Lissamine Green B dye by using nanostructured sol-gel TiO2 films

Ćurković, Lidija and Ljubas, Davor and Šegota, Suzana and Bačić, Ivana (2014) Photocatalytic degradation of Lissamine Green B dye by using nanostructured sol-gel TiO2 films. = Photocatalytic degradation of Lissamine Green B dye by using nanostructured sol-gel TiO2 films. Journal of Alloys and Compounds, 604. pp. 309-316. ISSN 0925-8388. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q1 (2013). Točan broj autora: 4.

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Abstract

Nanostructured sol-gel TiO2 films were prepared on a glass substrate by means of the dip-coating technique with titanium tetraisopropoxide as a precursor. TiO2 sols were synthesized with and without the addition of polyethylene glycol (PEG) as a structure-directing agent. The synthesized sol-gel TiO2 were characterized by XRD, AFM, FTIR and Micro-Raman spectroscopy. The photocatalytic activity of the films was evaluated by the photocatalytic degradation of Lissamine Green B (LGB) dye (dissolved in water) as a model pollutant with the predominant irradiation wavelength of 365 nm (UV-A). It was found that the addition of PEG to the initial sol affects the surface morphology and the photocatalytic properties of prepared sol-gel TiO2 films. AFM analysis confirmed the presence of nanostructured sol-gel titania films on the glass substrate. Roughness parameters (R a, Rq, and Zmax) of the sol-gel TiO2 film with the addition of PEG are higher than the parameters of the sol-gel TiO2 film without the addition of PEG. The TiO2 film prepared with the addition of PEG has a higher surface density (a larger active surface area) and better photocatalytic activity in the degradation of the LGB dye solution than the TiO2 film prepared without the addition of PEG. © 2014 Elsevier B.V. All rights reserved.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Atomic force microscopy; Glass; Photocatalysis; Sol-gel process; Sol-gels; Substrates; Titanium dioxide; Water pollution; Water treatment; FT-IR and micro-Raman spectroscopies; Lissamine green b; Photo catalytic degradation; Photocatalytic activities; Polyethylene glycol (PEG); Sol-gel TiO; Structure directing agents; Titanium tetraisopropoxide; Film preparation
Subjects: NATURAL SCIENCES > Chemistry
TECHNICAL SCIENCE > Mechanical Engineering
TECHNICAL SCIENCE > Basic technical sciences
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: Yes
Indexed in Current Contents: Yes
Quartiles: Q1 (2013)
Date Deposited: 03 Jun 2015 07:01
Last Modified: 29 Aug 2017 12:46
URI: http://repozitorij.fsb.hr/id/eprint/4202

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