Flexible 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 applications

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Peshawar-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorGovernment Girls Degree College-
Autor(es): dc.contributorDuy Tan University-
Autor(es): dc.contributorFederal University of Mato Grosso do Sul-
Autor(es): dc.creatorRahman, Kifayat U.-
Autor(es): dc.creatorFerreira-Neto, Elias P. [UNESP]-
Autor(es): dc.creatorRahman, Ghaws U.-
Autor(es): dc.creatorParveen, Rashida-
Autor(es): dc.creatorMonteiro, Andreia S. [UNESP]-
Autor(es): dc.creatorRahman, Gul-
Autor(es): dc.creatorVan Le, Quyet-
Autor(es): dc.creatorDomeneguetti, Rafael R. [UNESP]-
Autor(es): dc.creatorRibeiro, Sidney J.L. [UNESP]-
Autor(es): dc.creatorUllah, Sajjad [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:52:47Z-
Data de disponibilização: dc.date.available2022-02-22T00:52:47Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jece.2020.104708-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208229-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208229-
Descrição: dc.descriptionThis 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.-
Descrição: dc.descriptionInstitute of Chemical Sciences University of Peshawar-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University - UNESP, CP 355-
Descrição: dc.descriptionGovernment Girls Degree College-
Descrição: dc.descriptionInstitute of Research and Development Duy Tan University-
Descrição: dc.descriptionInstitute of Physics Federal University of Mato Grosso do Sul-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University - UNESP, CP 355-
Idioma: dc.languageen-
Relação: dc.relationJournal of Environmental Chemical Engineering-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAntibacterial-
Palavras-chave: dc.subjectBacterial cellulose-
Palavras-chave: dc.subjectPhotoactivity-
Palavras-chave: dc.subjectSelf-cleaning-
Palavras-chave: dc.subjectSilver-
Palavras-chave: dc.subjectTiO2-
Título: 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 applications-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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