Selective and Recyclable Congo Red Dye Adsorption by Spherical Fe₃O₄ Nanoparticles Functionalized with 1,2,4,5-Benzenetetracarboxylic Acid.

ABSTRACT: In this study, the new material Fe₃O₄@BTCA has been synthesized by immobilization of 1,2,4,5-Benzenetetracarboxylic acid (BTCA) on the surface of Fe₃O₄ NPs, obtained by co-precipitation of FeCl₃.6H₂O and FeCl₂.4H₂O in the basic conditions. Characterization by P-XRD, FE-SEM, and TEM confirm Fe₃O₄ has a spherical crystalline structure with an average diameter of 15 nm, which after functionalization with BTCA, increases to 20 nm. Functionalization also enhances the surface area and surface charge of the material, confirmed by BET and zeta potential analyses, respectively. The dye adsorption capacity of Fe₃O₄@BTCA has been investigated for three common dyes; Congo

SUBMITTER: Chatterjee S 

PROVIDER: S-EPMC6954200 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature