Cotton textile/iron oxide nanozyme composites with peroxidase-like activity: preparation, characterization, and application

0543167 - BC 2022 RIV US eng J - Článek v odborném periodiku
Šafařík, Ivo - Procházková, Jitka - Schroer, M.A. - Garamus, V.M. - Kopčanský, P. - Timko, M. - Rajnák, M. - Karpets, M. - Ivankov, O.I. - Avdeev, M. V. - Petrenko, V.I. - Bulavin, L. - Pospíšková, Kristýna
Cotton textile/iron oxide nanozyme composites with peroxidase-like activity: preparation, characterization, and application.
ACS Applied Materials and Interfaces. Roč. 13, č. 20 (2021), s. 23627-23637. ISSN 1944-8244. E-ISSN 1944-8252
Grant CEP: GA MŠMT(CZ) EF17_048/0007399
Institucionální podpora: RVO:60077344
Klíčová slova: cotton woven textile * iron oxide particles * magnetic fluid * microwave-assisted synthesis * nanozyme * peroxidase-like activity
Obor OECD: Materials engineering
Impakt faktor: 10.383, rok: 2021
Způsob publikování: Omezený přístup
https://pubs.acs.org/doi/10.1021/acsami.1c02154

At present, both native and immobilized nanoparticles are of great importance in many areas of science and technology. In this paper, we have studied magnetic iron oxide nanoparticles and their aggregates bound on woven cotton textiles employing two simple modification procedures. One modification was based on the treatment of textiles with perchloric-acid-stabilized magnetic fluid diluted with methanol followed by drying. The second procedure was based on the microwave-assisted conversion of ferrous sulfate at high pH followed by drying. The structure and functional properties of these modified textiles were analyzed in detail. Scanning electron microscopy of native and modified textiles clearly showed the presence of iron oxide nanoparticles on the surface of the modified cotton fibers. All of the modified textile materials exhibited light to dark brown color depending on the amount of the bound iron oxide particles. Magnetic measurements showed that the saturation magnetization values reflect the amount of magnetic nanoparticles present in the modified textiles. Small-angle X-ray and neutron scattering measurements were conducted for the detailed structural characterization at the nanoscale of both the native and magnetically modified textiles, and different structural organization of nanoparticles in the two kinds of textile samples were concluded. The textile-bound iron oxide particles exhibited peroxidase-like activity when the N,N-diethyl-p-phenylenediamine sulfate salt was used as a substrate, this nanozyme activity enabled rapid decolorization of crystal violet in the presence of hydrogen peroxide. The deposition of a sufficient amount of iron oxide particles on textiles enabled their simple magnetic separation from large volumes of solutions, if necessary, the magnetic response of the modified textiles can be simply increased by incorporation of a piece of magnetic iron wire. The simplicity of the immobilized nanozyme preparation and the low cost of all the precursors enable its widespread application, such as decolorization and degradation of selected organic dyes and other important pollutants. Other types of textile-bound nanozymes can be prepared and used as low-cost catalysts for a variety of applications.
Trvalý link: http://hdl.handle.net/11104/0324695