Free-standing SiO2/TiO2-MoS(2)composite nanofibrous membranes as nanoadsorbents for efficient Pb(ii) removal

Autor(es)

Mercante, Luiza A. ^{[1, 2]} ; Andre, Rafaela S. ^[1] ; Schneider, Rodrigo ^{[1, 3]} ; Mattoso, Luiz H. C. ^[1] ; Correa, Daniel S. ^{[1, 3]}

Afiliação do(s) autor(es)

^[1] Embrapa Instrumentacao, Nanotechnol Natl Lab Agr, BR-13560970 Sao Carlos, SP - Brazil

^[2] Fed Univ Bahia UFBA, Inst Chem, Gen & Inorgan Chem Dept, BR-40170280 Salvador, BA - Brazil

^[3] Univ Fed Sao Carlos, PPGQ, Dept Chem, Ctr Exact Sci & Technol, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: NEW JOURNAL OF CHEMISTRY; v. 44, n. 30, p. 13030-13035, AUG 14 2020.
• Citações Web of Science: 0

Resumo

Concerns regarding improper disposal of heavy metals have been considerably increasing in the last years due to their deleterious effects on human health and the environment. Therefore, designing appropriate materials capable of removing metal ions from wastewater has become imperative. Herein, we report the use of flexible free-standing silicon dioxide/titanium dioxide (SiO2/TiO2) nanofibrous membranes (NFMs) functionalized with molybdenum disulfide (MoS2) for Pb(ii) removal. The proposed hybrid nanomaterial was characterized using field-emission gun scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Benefiting from the large specific surface area, high porosity, and the interaction between sulfur and lead, the NFMs could decontaminate water samples with good Pb(ii) removal efficiency and recyclability. These excellent performances endow the modified nanofibrous membranes with great potential for application in wastewater treatment. (AU)

• Processo FAPESP: 16/23793-4 - Desenvolvimento de sensores nanoestruturados visando a detecção de compostos voláteis indicadores da qualidade de alimentos
• Beneficiário: Rafaela da Silveira Andre
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/18468-2 - Metodologias de sínteses de nanoestruturas de dissulfeto de molibdênio (MoS2) e avaliação da sua potencial aplicação em sistemas de adsorção de poluentes
• Beneficiário: Rodrigo Schneider
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/12174-4 - Desenvolvimento de nanofibras poliméricas híbridas para aplicação na agricultura
• Beneficiário: Daniel Souza Corrêa
• Modalidade de apoio: Auxílio à Pesquisa - Regular