Linear Polyethyleneimine-Based and Metal Organic Frameworks (DUT-67) Composite Hydrogels as Efficient Sorbents for the Removal of Methyl Orange, Copper Ions, and Penicillin V
Resumen
This research explores the integration of DUT-67 metal organic frameworks into polyethyleneimine-based hydrogels to assemble a composite system with enough mechanical strength, pore structure and chemical affinity to work as a sorbent for water remediation. By varying the solvent-to-modulator ratio in a water-based synthesis path, the particle size of DUT-67 was successfully modulated from 1 μm to 200 nm. Once DUT-67 particles were integrated into the polymeric hydrogel, the composite hydrogel exhibited enhanced mechanical properties after the incorporation of the MOF filler. XPS, NMR, TGA, FTIR, and FT Raman studies confirmed the presence and interaction of the DUT-67 particles with the polymeric chains within the hydrogel network. Adsorption studies of methyl orange, copper(II) ions, and penicillin V on the composite hydrogel revealed a rapid adsorption kinetics and monolayer adsorption according to the Langmuir’s model. The composite hydrogel demonstrated higher adsorption capacities, as compared to the pristine hydrogel, showcasing a synergistic effect, with maximum adsorption capacities of 473 ± 21 mg L−1, 86 ± 6 mg L−1, and 127 ± 4 mg L−1, for methyl orange, copper(II) ions, and penicillin V, respectively. This study highlights the potential of MOF-based composite hydrogels as efficient adsorbents for environmental pollutants and pharmaceuticals.
Luis Araque
Investigador en formación
Mis investigaciones son sobre materiales para aplicaciones de recuperación ambiental.
Roberto Fernández de Luis
Investigador
Especializado en la funcionalización de estructuras metalorgánicas (MOF) para la mejora de su potencial aplicación como adsorbentes de contaminantes
Jonás J. Pérez Bravo
Posdoct-CONICET
He participado en el desarrollo de biomateriales aplicados a la agroindustria, compósitos nanoestructurados para fotodegradación y/o adsorción de contaminantes.
Guillermo Copello
Investigador
Dedicado a la síntesis y caracterización de nanocompuestos a base de polímeros naturales para el desarrollo de materiales inteligentes funcionales
Juan Manuel Lázaro Martínez
Investigador
Dedicado a la síntesis y caracterización de nanocompuestos a base de polímeros naturales para el desarrollo de materiales inteligentes funcionales