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

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Salmon Landi Jr. (Author) Other; Joaquim Carneiro (Author) Other; Pier Parpot (Author) Other; Olívia Salomé G. P. Soares (Author) FEUP; Manuel Fernando R. Pereira (Author) FEUP; António M. Fonseca (Author) Other; Isabel C. Neves (Author) Other

Journal

Title: Desalination and Water Treatment

Vol. 223

Pages: 447-455

ISSN: 1944-3994

Publisher: Desalination Publications

Indexing

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Other information

Authenticus ID: P-00V-1VA

DOI: 10.5004/dwt.2021.27159

Abstract (EN): In the present study composites based on TiO(2 )nanoparticles, SiO2 and 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-SiO2 composites, 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 TiO2 functionalized 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9