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Photocatalytic degradation of Lissamine Green B dye by using nanostructured sol–gel TiO2 films (CROSBI ID 205272)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Ćurković, Lidija ; Ljubas, Davor ; Šegota, Suzana ; Bačić, Ivana Photocatalytic degradation of Lissamine Green B dye by using nanostructured sol–gel TiO2 films // Journal of alloys and compounds, 604 (2014), 309-316. doi: 10.1016/j.jallcom.2014.03.148

Podaci o odgovornosti

Ćurković, Lidija ; Ljubas, Davor ; Šegota, Suzana ; Bačić, Ivana

engleski

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

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 wavelengths 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 (Ra, 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 a better photocatalytic activity in the degradation of the LGB dye solution than the TiO2 film prepared without the addition of PEG.

sol-gel TiO2 films; photocatalysis; Lissamine green B; atomic force microscopy

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Podaci o izdanju

604

2014.

309-316

objavljeno

0925-8388

10.1016/j.jallcom.2014.03.148

Povezanost rada

Kemija, Strojarstvo, Temeljne tehničke znanosti

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