| Texto completo | |
| Autor(es): |
Meirelles, Mariana Rodrigues
;
Malafatti, Joao Otavio Donizette
;
Escote, Marcia Tsuyama
;
Pinto, Alexandre Henrique
;
Paris, Elaine Cristina
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MAGNETOCHEMISTRY; v. 9, n. 5, p. 14-pg., 2023-05-20. |
| Resumo | |
Magnetic nanoparticles are a promising alternative as a support in adsorption processes, aiming at the easy recovery of the aqueous medium. A faujasite zeolite (FAU) surface was decorated with magnesium ferrite (MgFe2O4) nanoparticles. FAU is a porous adsorbent with high specific surface area (SSA) and chemical stability. The FAU:MgFe2O4 nanocomposite 3:1 ratio (w w(-1)) promotes the combination of the surface and magnetic properties. The results showed the effectiveness of the MgFe2O4 immobilization on the FAU surface, exhibiting a high SSA of 400 m(2) g(-1). The saturation magnetization (Ms) was verified as 5.9 emu g(-1) for MgFe2O4 and 0.47 emu g(-1) for FAU:MgFe2O4, an environmentally friendly system with soft magnetic characteristics. The magnetic nanocomposite achieved high adsorption values of around 94% removal for Co2+ and Mn2+ ions. Regarding its reuse, the nanocomposite preserved adsorption activity of above 65% until the third cycle. Thus, the FAU:MgFe2O4 nanocomposite presented favorable adsorptive, magnetic, and recovery properties for reuse cycles in polluted water. (AU) | |
| Processo FAPESP: | 21/14992-1 - Obtenção de membranas nanocompósitas de PCL/PMMA/zeólita para aplicação como sensor químico para detecção de resíduos de polifenóis da indústria cafeeira |
| Beneficiário: | João Otávio Donizette Malafatti |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |