N.R. Palapa, T. Taher, R. Mohadi, A. Rachmat, M. Mardiyanto, M. Miksusanti, A. Lesbani
In this study, we attempted to intercalate the Keggin polyoxometalate (POM) anion SiW12O404− with NiAl-layered double hydroxide using a facile ion-exchange technique under a N2 atmosphere. The obtained solids were characterized via X-ray diffraction analysis, Fourier-transform infrared spectroscopy, N2 adsorption-desorption isotherms, scanning and transmission electron microscopes to evaluate their surface morphology. Furthermore, the synthesized materials were employed as novel adsorbents for the removal of malachite green (MG) dye from aqueous solutions. The intercalation was successful. The synthesized material as an adsorbent for the removal of MG can be used for the removal of cationic dyes from aqueous solutions. The adsorption kinetics study showed that the adsorption of MG onto NiAl-POM best fitted the pseudo-second-order model, which indicated that the adsorption process was conducted chemically. Moreover, the adsorption isotherm revealed that the adsorption occurred in a monolayer system. The regeneration process showed that the high effectivity adsorption process after fifth cycles adsorption for NiAl-POM. © 2021 Taylor & Francis Group, LLC.
Graduate School of Mathematics and Natural Sciences Faculty, Sriwijaya University, South Sumatra, Ogan Ilir, Indonesia; Department of Environmental Engineering, Institut Teknologi Sumatera, Jalan Terusan Ryacudu, Way Hui, Kecamatan Jati Agung, Lampung Selatan, 35365, Indonesia; Research Center of Inorganic Materials and Coordination Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Ogan Ilir, Indonesia; Department of Pharmacy, Faculty of Mathematics and Natural Sciences, Sriwijaya University, South Sumatra, Ogan Ilir, Indonesia
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