Mesoporous aluminosilicate glasses: Potential materials for dye removal from wastewater effluents
| Autor: | Carsten Doerenkamp, Flavio P. Almeida, Andrea S. S. de Camargo, Elizaveta Kessler, Moema B. S. Botelho, C.R. Ferrari, Hellmut Eckert |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Ion exchange Inorganic chemistry Portable water purification Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Amorphous solid Inorganic Chemistry Rhodamine chemistry.chemical_compound chemistry Aluminosilicate Reagent Materials Chemistry Ceramics and Composites PROCESSO SOL-GEL Physical and Theoretical Chemistry 0210 nano-technology Mesoporous material |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2017.06.018 |
| Popis: | Mesoporous amorphous sodium-aluminosilicate host matrices of composition Si1−xAlxNaxO2, 0.1 ≤ x ≤ 0.33, obtained by sol-gel methodology, have been used as sequestrating agents for the cationic dye Rhodamine 6 G (Rh6G) in solution. Favorable adsorption kinetics and a wide pH working range (4–10) as well as high sorption capacities for Rh6G render these materials potentially useful reagents for effective dye removal from wastewaters. While the experimentally realized sorption capacities fall significantly below the theoretical limits, used materials can be thermally re-cycled by pyrolizing the sequestrated dye molecules. Solid state NMR and BET measurements show that this process occurs under preservation of the materials' structural integrity, allowing it to be re-used multiple times. |
| Databáze: | OpenAIRE |
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