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dc.contributor.authorRahman, Kifayat U.
dc.contributor.authorFerreira-Neto, Elias P. [UNESP]
dc.contributor.authorRahman, Ghaws U.
dc.contributor.authorParveen, Rashida
dc.contributor.authorMonteiro, Andreia S. [UNESP]
dc.contributor.authorRahman, Gul
dc.contributor.authorVan Le, Quyet
dc.contributor.authorDomeneguetti, Rafael R. [UNESP]
dc.contributor.authorRibeiro, Sidney J.L. [UNESP]
dc.contributor.authorUllah, Sajjad [UNESP]
dc.identifier.citationJournal of Environmental Chemical Engineering, v. 9, n. 1, 2021.
dc.description.abstractThis research study reports the formation of flexible and multifunctional organic-inorganic hybrid membranes (BC-SiO2-TiO2/Ag) based on bacterial cellulose (BC) that contain photoactive (TiO2) and antibacterial (Ag) components, rendering them photocatalytic, self-cleaning and UV-shielding properties (due to TiO2) as well as antibacterial activity. Coating of BC with sol-gel derived silica and titania particles was achieved through hydrolysis-polycondensation of tetraethyl orthosilicate and titanium (IV) isopropoxide, respectively, and a soft hydrothermal treatment (140 °C, 20 h) was used to obtain well-crystalline TiO2. The prepared BC-SiO2-TiO2/Ag photoactive membranes were characterized by an array of analytical techniques including XRD, XRF, SEM-EDS, electronic absorption spectroscopy and vibrational spectroscopy. The morphology of TiO2 coatings changes from a homogenous film-like smooth one to a rougher one consisting of randomly oriented titania particles (170 ± 35 nm) upon increasing the TiO2 loading of the membranes. These prepared photoactive BC-SiO2-TiO2 membranes exhibited excellent TiO2-loading dependent photocatalytic/self-cleaning activity towards crystal violet dye deposited as an over-layer on the surface of the membranes, degrading 97 % of the dye within 50 min of UV illumination. In addition to good photoactivity, the BC-SiO2-TiO2/Ag membranes demonstrated reasonable antibacterial activity against five different bacterial strains under dark conditions. These flexible BC-based hybrid membranes with photocatalytic, self-cleaning, antibacterial properties have the potential to be used in the design of self-cleaning and antibacterial surfaces, filters and facemasks that could be easily disinfected under UV irradiation from a lamp or natural sunlight and safely discarded and even recycled.en
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.subjectBacterial cellulose
dc.titleFlexible bacterial cellulose-based BC-SiO2-TiO2-Ag membranes with self-cleaning, photocatalytic, antibacterial and UV-shielding properties as a potential multifunctional material for combating infections and environmental applicationsen
dc.contributor.institutionUniversity of Peshawar
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionGovernment Girls Degree College
dc.contributor.institutionDuy Tan University
dc.contributor.institutionFederal University of Mato Grosso do Sul
dc.description.affiliationInstitute of Chemical Sciences University of Peshawar
dc.description.affiliationInstitute of Chemistry São Paulo State University - UNESP, CP 355
dc.description.affiliationGovernment Girls Degree College
dc.description.affiliationInstitute of Research and Development Duy Tan University
dc.description.affiliationInstitute of Physics Federal University of Mato Grosso do Sul
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University - UNESP, CP 355
dc.identifier.scopus2-s2.0-85097499722[5][6][9] 0000-0001-9931-690X 0000-0001-9931-690X[10]
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