Study on the ability to remove azo dyes of the metal-organic framework material MIL-101(Cr)

Abstract

MIL-101(Cr) is formed from 1,4- benzene dicarboxylate and chromium trimer bridges and possesses a zeotype and medium pore structure along with a large BET-specific surface area, the bases for it to be a leading material in environmental remediation applications. This study synthesized the MIL-101(Cr) metal-organic framework using the hydrothermal method. The formed materials have sharp crystalline morphology octahedral size from 100-300 nm. XRD plot showing peaks at 21.10o and 26,73o assigned to MIL-101(Cr). The surface area of this material calculated by the N2 adsorption isotherm method gives the result of ~ 2,900 m2/g. This material can remove organic dyes by the simultaneous photocatalytic adsorption mechanism. The ability to remove methyl orange at an initial concentration of 10 ppm was over 90%.