Study of the interactions of the hazardous amoxicillin antibiotic inside the MCM-41/CTA hydrophobic cavities
| Autor: | W.F. Magalhães, Fernando Fulgêncio Henriques, Tatiana A. Ribeiro-Santos, Ana Paula C. Teixeira, Mateus Carvalho Monteiro de Castro, Maria Helena Araujo, Rochel M. Lago, Luisa E. Milagre, Dario Windmöller |
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| Rok vydání: | 2019 |
| Předmět: |
Chemistry
Diffusion Composite number Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Positron annihilation spectroscopy Colloid and Surface Chemistry Adsorption MCM-41 Chemical engineering medicine Molecule 0210 nano-technology Activated carbon medicine.drug |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects. 582:123873 |
| ISSN: | 0927-7757 |
| DOI: | 10.1016/j.colsurfa.2019.123873 |
| Popis: | In this work, it was studied the interaction of the hazardous antibiotic amoxicillin (AMX) molecules inside the mesocavities of a composite MCM-41/cetyltrimethylammonium (MCTA). MCTA with low surface area (5 m2 g−1) showed high sorption efficiency of AMX (55 mgAMX g−1) comparable with high surface area activated carbon (980 m2 g−1). Positron annihilation spectroscopy and isosteric heats suggested that the AMX molecules are not adsorbed by a classical surface process but are attracted and trapped by the CTA C18 hydrophobic chains inside the MCM-41 mesocavities. Preliminary kinetic data suggests that the AMX sorption process takes place in three stages, the external adsorption, interaction with the CTA molecules and diffusion inside the mesocavities. |
| Databáze: | OpenAIRE |
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