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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | University of Peshawar | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | Government Girls Degree College | - |
Autor(es): dc.contributor | Duy Tan University | - |
Autor(es): dc.contributor | Federal University of Mato Grosso do Sul | - |
Autor(es): dc.creator | Rahman, Kifayat U. | - |
Autor(es): dc.creator | Ferreira-Neto, Elias P. [UNESP] | - |
Autor(es): dc.creator | Rahman, Ghaws U. | - |
Autor(es): dc.creator | Parveen, Rashida | - |
Autor(es): dc.creator | Monteiro, Andreia S. [UNESP] | - |
Autor(es): dc.creator | Rahman, Gul | - |
Autor(es): dc.creator | Van Le, Quyet | - |
Autor(es): dc.creator | Domeneguetti, Rafael R. [UNESP] | - |
Autor(es): dc.creator | Ribeiro, Sidney J.L. [UNESP] | - |
Autor(es): dc.creator | Ullah, Sajjad [UNESP] | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:52:47Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:52:47Z | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-01-31 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1016/j.jece.2020.104708 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/208229 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/208229 | - |
Descrição: dc.description | This 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.description | Institute of Chemical Sciences University of Peshawar | - |
Descrição: dc.description | Institute of Chemistry São Paulo State University - UNESP, CP 355 | - |
Descrição: dc.description | Government Girls Degree College | - |
Descrição: dc.description | Institute of Research and Development Duy Tan University | - |
Descrição: dc.description | Institute of Physics Federal University of Mato Grosso do Sul | - |
Descrição: dc.description | Institute of Chemistry São Paulo State University - UNESP, CP 355 | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Journal of Environmental Chemical Engineering | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | Antibacterial | - |
Palavras-chave: dc.subject | Bacterial cellulose | - |
Palavras-chave: dc.subject | Photoactivity | - |
Palavras-chave: dc.subject | Self-cleaning | - |
Palavras-chave: dc.subject | Silver | - |
Palavras-chave: dc.subject | TiO2 | - |
Título: dc.title | 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 | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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