Influence of GO reinforcement on keratin based smart hydrogel and its application for emerging pollutants removal
| Autor: | Claudio Javier Pérez, María Emilia Villanueva, María Luz Peralta Ramos, Gonzalo Galaburri, Guillermo Javier Copello, Joaquín Antonio González |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
KERATIN
Kinetics Composite number macromolecular substances 02 engineering and technology INGENIERÍAS Y TECNOLOGÍAS 010501 environmental sciences 01 natural sciences SMART POLYMERS Adsorption Desorption Ingeniería de los Materiales Keratin medicine Chemical Engineering (miscellaneous) Waste Management and Disposal 0105 earth and related environmental sciences chemistry.chemical_classification Nanocomposite CIPROFLOXACIN REMEDIATION Process Chemistry and Technology technology industry and agriculture 021001 nanoscience & nanotechnology Pollution NANOCOMPOSITES chemistry Chemical engineering Self-healing hydrogels GRAPHENE OXIDE Swelling medicine.symptom 0210 nano-technology |
| Popis: | In this work, the influence of graphene oxide (GO) reinforcement on keratin based smart hydrogel and its application for the emerging pollutant ciprofloxacin removal was studied. Firstly, the obtained material was characterized by Infrared Spectroscopy, Scanning Electronic Microscopy, Small angle X-ray Scattering and Swelling and Rheological behavior. The results showed that the keratin hydrogel and those nanocomposites containing GO present stimuli responsive behavior by changing the swelling along with the pH. Keratin hydrogels and the ones containing 0.5% of GO showed a similar behavior where swelling decreased between pH 6 and 5. The introduction of GO at 2% changed this inflection point at a value between pH 7 and 6. Also, the swelling of the shrunk hydrogels was higher when containing 2% GO. This effect was probably due to the steric hindrance generated by the nanosheets and their functional groups, partially interfering with keratin chains interaction. The antibiotic was adsorbed in the different active sites in the hydrogel provided by the keratin and the GO structures. After that, the composite adsorption isotherms against ciprofloxacin (CPX) and its kinetics were studied. The ability of the material to expand at high pH allowed a better desorption of the CPX. Thus, reusability presented a better performance when basic washings were used. Fil: Peralta Ramos, María Luz. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica; Argentina Fil: Galaburri, Gonzalo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica; Argentina Fil: González, Joaquín Antonio. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Pérez, Claudio Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Villanueva, María Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina Fil: Copello, Guillermo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina |
| Databáze: | OpenAIRE |
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