Free-standing cellulose film containing manganese dioxide nanoparticles and its use in discoloration of indigo carmine dye

Autor(es)

Oliveira, Larissa V. F. ^[1] ; Bennici, Simona ^[2] ; Josien, Ludovic ^[2] ; Limousy, Lionel ^[2] ; Bizeto, Marcos A. ^[1] ; Camilo, Fernanda F. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo Campus Diadema, Inst Ciencias Ambientais Quim & Farmaceut, Dept Quim, Lab Mat Hibridos, Diadema - Brazil

^[2] Univ Strasbourg, Univ Haute Alsace, CNRS, UMR 7361, Inst Sci Mat Mulhouse, 3b Rue Alfred Werner, F-68093 Mulhouse - France

• Tipo de documento: Artigo Científico
• Fonte: Carbohydrate Polymers; v. 230, FEB 15 2020.
• Citações Web of Science: 0

Resumo

In this study, we report the production of a free-standing film of non-modified cellulose impregnated with 12 wt % of MnO2 nanoparticles with less than 100 nm in size. The method here described can be applied to the immobilization of different types of nanoparticles. The film was prepared by dissolving microcrystalline cellulose in an ionic liquid followed by its regeneration by adding water to the former solution. Then, the wet film was impregnated with the nanoparticles by dipping it in a MnO2 dispersion. Electron microscopy images revealed manganese dioxide nanoparticles distributed not only at the film surface but also in its interior. The cellulose film impregnated with MnO2 nanoparticles was capable of efficiently discolouring an Indigo Carmine dye solution in 25 min upon ambient light. The film was easily removed from the dye solution and repeatedly reused for at least 10 times without losing its discolouring efficiency. (AU)

• Processo FAPESP: 18/20826-4 - Preparação e avaliação de propriedades de nanopartículas suportadas em filmes de celulose não modificada
• Beneficiário: Fernanda Ferraz Camilo
• Modalidade de apoio: Auxílio à Pesquisa - Regular