Characterization of Sn-MOF and its adsorption application for Acid Red 3R

摘要

A novel adsorbent Sn-MOF synthesized through hydrothermal method at 170 degrees C, was used in the removal of Acid Red 3R (AR3R) from the aqueous solution. The physicochemical properties of the Sn-MOF were determined. The adsorption kinetics, mechanism and regeneration were further investigated in the adsorption process. It showed an effective adsorption for AR3R with the capacity of 141.88 mg.g(-1). The chemisorption is significant in the process and the adsorption of AR3R is limited by both the intraparticle diffusion and the film diffusion. The adsorption capacity of Sn-MOF that treated by photocatalytic regeneration does not decrease obviously after six cycles. (C) 2020 Published by Elsevier B.V.