Free-standing cellulose film containing manganese dioxide nanoparticles and its use in discoloration of indigo carmine dye.
Carbohydr Polym
; 230: 115621, 2020 Feb 15.
Article
em En
| MEDLINE
| ID: mdl-31887869
In this study, we report the production of a free-standing film of non-modified cellulose impregnated with 12â¯wt.% of MnO2 nanoparticles with less than 100â¯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 25â¯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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Carbohydr Polym
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido