Adsorption of hazardous and noxious 4-nitrophenol by a silsesquioxane organic-inorganic hybrid material
| Autor: | Hérica A. Magosso, Cristiane Luisa Jost, Gabriela Mafra, Paola Zimmermann Crocomo, Eduardo Carasek, Marília Reginato de Barros, João Paulo Winiarski, Otávio R. Bittencourt |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science Potentiometric titration Langmuir adsorption model General Chemistry Condensed Matter Physics Organic compound Chloride Silsesquioxane Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound symbols.namesake Adsorption chemistry Chemical engineering Materials Chemistry Ceramics and Composites symbols medicine Titration Hybrid material medicine.drug |
| Zdroj: | Journal of Sol-Gel Science and Technology. 99:402-412 |
| ISSN: | 1573-4846 0928-0707 |
| DOI: | 10.1007/s10971-021-05573-3 |
| Popis: | This paper reports the synthesis and characterization of a silsesquioxane polymer based on a rigid silica inorganic core and 3-n-propyl(4-methylpyridinium) organic linker (Si-4Pic+Cl‒), an organic–inorganic hybrid material which showed great potential for the application as an adsorbent for 4-nitrophenol (4-NP), a hazardous organic compound. The silsesquioxane material was fully characterized by ATR-FTIR, solid-state 13C-NMR, and 29Si-NMR, TGA, potentiometric chloride titration and carbon, hydrogen, and nitrogen elemental analyses (CHN). The effect of pH, contact time on adsorption performance of Si-4Pic+Cl‒ to 4-NP and heterogeneous adsorption equilibrium were investigated systematically. The remarkable adsorption affinity of 4-NP onto Si-4Pic+Cl‒ obeys the Langmuir model and a π–π stacking interaction between adsorbent and adsorbate was proposed. Cycle rate experiments demonstrated that the ability to be recovered and reusable at least three times makes this silsesquioxane material a very promising adsorbent of noxious 4-NP in aqueous media. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink