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A Polymeric Composite Material (rGO/PANI) for Acid Blue 129 Adsorption.

ABSTRACT: Over the years, polyaniline (PANI) has received enormous attention due to its unique properties. Herein, it was chosen to develop a new polymeric composite material: reduced graphene oxide/polyaniline (rGO/PANI). The composite was prepared by a simple and cost-effective fabrication method of formation by mixing and sonication in various conditions. The obtained materials were characterized and identified using various techniques such as scanning electron microscopy (SEM), Raman and ATR-FTIR spectroscopy, and X-ray diffraction (XRD). The objective of the paper was to confirm its applicability for the removal of contaminants from water. Water could be contaminated by various types of pollutants, e.g., inorganics, heavy metals, and many other industrial compounds, including dyes. We confirmed that the Acid Blue 129 dyes can be substantially removed through adsorption on prepared rGO/PANI. The adsorption kinetic data were modeled using the pseudo-first-order and pseudo-second-order models and the adsorption isotherm model was identified.

SUBMITTER: Kukulski T

PROVIDER: S-EPMC7285098 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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A Polymeric Composite Material (rGO/PANI) for Acid Blue 129 Adsorption.

Kukulski Tomasz T Wacławek Stanisław S Silvestri Daniele D Krawczyk Kamil K Padil Vinod V T VVT Fryczkowski Ryszard R Janicki Jarosław J Černík Miroslav M

Polymers 20200503 5

Over the years, polyaniline (PANI) has received enormous attention due to its unique properties. Herein, it was chosen to develop a new polymeric composite material: reduced graphene oxide/polyaniline (rGO/PANI). The composite was prepared by a simple and cost-effective fabrication method of formation by mixing and sonication in various conditions. The obtained materials were characterized and identified using various techniques such as scanning electron microscopy (SEM), Raman and ATR-FTIR spec ...[more]

PMID: 32375280

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Project description:A composite containing cellulose (CEL) and chitosan (CS) synthesized by a simple and recyclable method by using butylmethylimmidazolium chloride, an ionic liquid, was found to exhibit remarkable enantiomeric selectivity toward the adsorption of amino acids. The highest adsorption capacity and enantiomeric selectivity are exhibited by 100% CS. A racemic amino acid can be enantiomerically resolved by 100% CS in about 96-120 h. Interestingly, adsorption by 50:50 CEL/CS is more similar to that by 100% CS than to 100% CEL. Specifically, whereas 100% CEL has the lowest adsorption capacity and enantiomeric selectivity, 50:50 CEL/CS has sufficient enantiomeric selectivity to enable it to be used for chiral resolution. This is significant because in spite of its high enantiomeric selectivity 100% CS cannot practically be used because it has relatively poor mechanical properties and undergoes extensive swelling. Adding 50% CEL to CS substantially improves the mechanical properties and reduces its swelling while it retains sufficient enantiomeric selectivity to enable it to be used for routine chiral separations. The kinetic results indicate that the enantiomerically selective adsorption is due not to the initial surface adsorption but rather to the subsequent stage in which the adsorbate molecules diffuse into the pores within the particles of the composites and consequently are adsorbed by the interior of each particle. The strong intermolecular and intramolecular hydrogen bond network in CEL enables it to adopt a very dense structure that makes it difficult for adsorbate molecules to diffuse into its interior, thereby leading to low enantiomeric selectivity. Compared to hydroxy groups, amino groups cannot form strong hydrogen bonds. The hydrogen bond network in CS is not as extensive as in CEL, and its inner structure is relatively less dense than that of CEL. Adsorbate molecules can, therefore, diffuse from the outer surface to its inner structure relatively more easily than in CEL, thereby leading to higher enantiomeric selectivity for 100% CS.

Dataset Information

A Polymeric Composite Material (rGO/PANI) for Acid Blue 129 Adsorption.

Publications

A Polymeric Composite Material (rGO/PANI) for Acid Blue 129 Adsorption.

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