Abstract
Herein, we report the synthesis of highly functionalized porous metalloporphyrin complexes of In(III)chloride with the chemical formula [In(p-X4TPP)Cl]; (X= Cl, Br) produced by utilising a catalyst-free coupling technique and used as an efficient dye adsorbent. Scanning electron microscopy, powder x-ray diffraction, fourier transform infrared, proton nuclear magnetic resonance, elemental analysis, and ultraviolet-visible spectroscopy were used to determine the morphology and structure of synthesized complexes. To evaluate the efficacy of the synthesized complexes in removing cationic dyes from an aqueous solution, the adsorption of methylene blue dye was examined. The adsorbent's adsorption kinetics was consistent with the pseudo-second-order kinetic model, and the adsorption isotherm followed the Langmuir model, with Qmax values of 80.4386 and 88.060 mg.g−1, respectively. The adsorption mechanism revealed that, in addition to electrostatic interactions, the high specific surface area, the presence of X···X, and the strong π-π interaction between In(III)chloride complexes and methylene blue dye play important roles in methylene blue dye adsorption.
Published Version
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