Bacterial Nanocellulose/MoS2 Hybrid Aerogels as Bifunctional Adsorbent/Photocatalyst Membranes for in-Flow Water Decontamination

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Peshawar-
Autor(es): dc.contributorUniversidade Federal de Mato Grosso do Sul (UFMS)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorFerreira-Neto, Elias P. [UNESP]-
Autor(es): dc.creatorUllah, Sajjad [UNESP]-
Autor(es): dc.creatorSilva, Thais C. A. da [UNESP]-
Autor(es): dc.creatorDomeneguetti, Rafael R. [UNESP]-
Autor(es): dc.creatorPerissinotto, Amanda P.-
Autor(es): dc.creatorVicente, Fabio S. de [UNESP]-
Autor(es): dc.creatorRodrigues-Filho, Ubirajara P.-
Autor(es): dc.creatorRibeiro, Sidney J. L. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:56:43Z-
Data de disponibilização: dc.date.available2022-02-22T00:56:43Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-09-16-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/acsami.0c14137-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209489-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209489-
Descrição: dc.descriptionTo address the problems associated with the use of unsupported nanomaterials, in general, and molybdenum disulfide (MoS2), in particular, we report the preparation of self-supported hybrid aerogel membranes that combine the mechanical stability and excellent textural properties of bacterial nanocellulose (BC)-based organic macro/mesoporous scaffolds with the excellent adsorption-cum-photocatalytic properties and high contaminant removal performance of MoS2 nanostructures. A controlled hydrothermal growth and precise tuning of the synthetic parameters allowed us to obtain BC/MoS2-based porous, self-supported, and stable hybrid aerogels with a unique morphology resulting from a molecular precision in the coating of quantum-confined photocatalytic MoS2 nanostructures (2-4 nm crystallite size) on BC nanofibrils. These BC/MoS2 samples exhibit high surface area (97-137 m(2).g(-1)) and pore volume (0.28-0.36 cm(3).g(-1)) and controlled interlayer distances (0.62-1.05 nm) in the MoS2 nanostructures. Modification of BC with nanostructured MoS2 led to an enhanced pollutants removal efficiency of the hybrid aerogels both by adsorptive and photocatalytic mechanisms, as indicated by a detailed study using a specifically designed membrane photoreactor containing the developed photoactive/adsorptive BC/MoS2 hybrid membranes. Most importantly, the prepared BC/Mo(S)2 aerogel membranes showed high performance in the photoassisted in-flow removal of both organic dye (methylene blue (MB)) molecules (96% removal within 120 min, K-obs = 0.0267 min(-1)) and heavy metal ions (88% Cr(VI) removal within 120 min, K-obs = 0.0012 min(-1)), separately and/or simultaneously, under UV-visible light illumination as well as excellent recyclability and photostability. Samples with interlayer expanded MoS2 nanostructures were particularly more efficient in the removal of smaller species (CrO42-) as compared to larger (MB) dye molecules. The prepared hybrid aerogel membranes show promising behavior for application in in-flow water purification, representing a significant advancement in the use of self-supported aerogel membranes for photocatalytic applications in liquid media.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionHigher Education Commission, Pakistan-
Descrição: dc.descriptionFederal University of Mato Grosso do Sul (UFMS)-
Descrição: dc.descriptionSao Paulo State University (UNESP)-
Descrição: dc.descriptionSao Paulo State Univ, Inst Chem, BR-14800060 Araraquara, SP, Brazil-
Descrição: dc.descriptionUniv Peshawar, Inst Chem Sci, Peshawar, Pakistan-
Descrição: dc.descriptionUniv Fed Mato Grosso do Sul, Inst Phys, BR-79070900 Campo Grande, MS, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Inst Chem Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Inst Geosci & Exact Sci, Dept Phys, BR-13500970 Rio Claro, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Inst Chem, BR-14800060 Araraquara, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Inst Geosci & Exact Sci, Dept Phys, BR-13500970 Rio Claro, SP, Brazil-
Descrição: dc.descriptionFAPESP: 2015/22828-6-
Descrição: dc.descriptionFAPESP: 2018/01934-0-
Descrição: dc.descriptionHigher Education Commission, Pakistan: 9286-
Formato: dc.format41627-41643-
Idioma: dc.languageen-
Publicador: dc.publisherAmer Chemical Soc-
Relação: dc.relationAcs Applied Materials & Interfaces-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectbacterial cellulose-
Palavras-chave: dc.subjectMoS2-
Palavras-chave: dc.subjectphotocatalytic membrane-
Palavras-chave: dc.subjectin-flow decontamination-
Palavras-chave: dc.subjectaerogel-
Título: dc.titleBacterial Nanocellulose/MoS2 Hybrid Aerogels as Bifunctional Adsorbent/Photocatalyst Membranes for in-Flow Water Decontamination-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.