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Performance of self-cleaning cotton textiles coated with TiO2, TiO2-SiO2and TiO2-SiO2-HY in removing Rhodamine B and Reactive Red 120 dyes from aqueous solutions

Authors :
Landi, Salmon
Carneiro, Joaquim
Parpot, Pier
Soares, Olívia S.G.P.
Pereira, Manuel F.R.
Fonseca, António M.
Neves, Isabel C.
Source :
Desalination & Water Treatment; May 2021, Vol. 223 Issue: 1 p447-455, 9p
Publication Year :
2021

Abstract

In the present study composites based on TiO2nanoparticles, SiO2and HY zeolite were synthesized by using a standard sol-gel methodology and analyzed by Fourier-transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy-energy-dispersive X-ray spectroscopy techniques. The photocatalysts were impregnated on cotton textiles and their photocatalytic abilities were examined by degradation of Rhodamine B (RhB) and Reactive Red 120 (RR120) dyes in aqueous solution under similar solar irradiation. RhB removal efficiencies from cotton textiles were 87%, 72% and 50% for TiO2, TiO2-SiO2-HY zeolite and TiO2-SiO2composites, respectively and achieved after 3 h of light irradiation. However, for the RR120 dye, the reached result was different as the photodegradation for this dye (65% efficiency) was only observed in bare TiO2functionalized textile. In addition, for the treatment with TiO2-SiO2-HY zeolite, it was found that for initial alkaline conditions at pH of the RhB dye solution, the photodegradation rate decreased.

Details

Language :
English
ISSN :
19443994 and 19443986
Volume :
223
Issue :
1
Database :
Supplemental Index
Journal :
Desalination & Water Treatment
Publication Type :
Periodical
Accession number :
ejs67060463
Full Text :
https://doi.org/10.5004/dwt.2021.27159