Metoprolol beta-blocker decontamination from water by the adsorptive action of metal-organic frameworks-nano titanium oxide coated tin dioxide nanoparticles

Abstract

Due to prevalent use, resistance to hydrolysis and confined human metabolism, metoprolol (METP) b-blockers are excessively detected in water effluents and therefore must be removed. Adsorption of METP onto metal-organic frameworks-nano titanium oxide coated tin dioxide (nTiO2@SnO2@Mn(5AB-HQ)) nanocomposite was monitored to examine the potential decontamination from wastewater contaminated. The nTiO2@SnO2@Mn(5AB-HQ) nanocomposite was synthesized by the reaction of 5-azobenzoate-8-hydroxyquinoline (5AB-HQ) with manganese chloride in presence of mixed metal oxides (nTiO2@SnO2) under microwave heating irradiation for 3 min and effectively implemented for adsorption of METP. Excellent surface area was evident (267.75 m2g−1) and the maximum METP recoveries were 65.42, 82.55 and 95.89% using 50, 100 and 150 mg L−1, respectively. The possible interaction mechanisms are suggested to take place by both physical adsorption in the forms of electrostatic and π-π interaction as well as chemical adsorption as coordination bond formation based on the effect of solution pH and zeta potential of METP. Five kinetics models were monitored to assure adsorption fitting of METP via pseudo-second and pore film diffusion models. Seven isotherm models confirmed adsorption suitability of Langmuir and Redlich-Peterson models. Finally, the assembled nTiO2@SnO2@Mn(5AB-HQ) was confirmed as a substantially functionalized and recyclable nanocomposite to afford powerful nanomaterial for water decontamination of metoprolol b-blocker.