Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Photocatalytic Activity and Biocide Properties of Ag-TIO2 Composites on Cotton Fabrics

Uriel Chacón-Argaez
,
Luis Cedeño-Caero
* ORCID logo ,
Ruben D. Cadena-Nava
,
Kendra Ramirez-Acosta
,
Sergio Fuentes Moyado
* ,
Perla Sánchez-López
,
Gabriel Alonso Núñez
Version 1 : Received: 26 April 2023 / Approved: 27 April 2023 / Online: 27 April 2023 (03:05:20 CEST)

A peer-reviewed article of this Preprint also exists.

Chacon-Argaez, U.; Cedeño-Caero, L.; Cadena-Nava, R.D.; Ramirez-Acosta, K.; Moyado, S.F.; Sánchez-López, P.; Alonso Núñez, G. Photocatalytic Activity and Biocide Properties of Ag–TiO2 Composites on Cotton Fabrics. Materials 2023, 16, 4513. Chacon-Argaez, U.; Cedeño-Caero, L.; Cadena-Nava, R.D.; Ramirez-Acosta, K.; Moyado, S.F.; Sánchez-López, P.; Alonso Núñez, G. Photocatalytic Activity and Biocide Properties of Ag–TiO2 Composites on Cotton Fabrics. Materials 2023, 16, 4513.

Abstract

Composites of Ag and TiO2 nanoparticles on cotton fabrics were synthetized in-situ by sono-chemical and hydrothermal methods achieving the successive formation of Ag-NPs and Ti-NPs directly on the fabric. The impregnated fabrics were characterized by ATR-FTIR spectroscopy, high resolution microscopy (HREM), scanning electron microscopy coupled with Ener-gy-dispersive X-ray spectroscopy (SEM-EDS), Raman, photoluminescence, UV-vis and DRS spectroscopies and by tension tests. Results showed the successful formation and impregnation of NPs on the cotton fabric, with a negligible leaching of NPs after several washing cycles. The photocatalytic activity of supported NPs was assessed by the degradation of methyl blue dye (MB) under solar and UV irradiation revealing improved photocatalytic activity of the Ag-TiO2/cotton composites due to a synergy of both Ag and TiO2 nanoparticles. This behavior is attributed to a diminished electron-hole recombination effect in the Ag-TiO2 cotton samples. The biocide activity of these composites on the growth inhibition of Staphylococcus aureus (Gram+) and Escherichia coli (Gram-) was confirmed, revealing interesting possibilities for the utilization of the functionalized cotton fabric as protective cloth for medical applications.

Keywords

Ag nanoparticles; Ag-TiO2 nanoparticles; cotton fabrics; photocatalytic activity; biocide activity; E. coli; S. aureus

Subject

Chemistry and Materials Science, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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