Abstract
The thermodynamics of aniline adsorption from aqueous solution on polyvinyl alcohol Sn(IV) tungstate nano composite cation-exchanger was studied. The nano composite cation-exchanger was prepared by surfactant assisted sol–gel precipitation method and characterized to elucidate the morphology, particle size, crystallinity and structure using SEM, TEM, X-RAY and FTIR. The nano composite cation-exchanger possessed flakes like morphology with particle size in the nano range. The analytical applicability and thermodynamic parameters like ΔH, ΔG and ΔS of this nano composite were also calculated. The thermodynamic parameters showed that the adsorption of aniline onto nano composite cation-exchanger is feasible, spontaneous and exothermic.
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Acknowledgements
The authors are thankful to Department of Applied Chemistry, Z. H. College of Engineering and Technology, A.M.U. (Aligarh) for providing research facilities and also to the University Grants Commission, New Delhi, (India) for financial assistance.
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Mohammad, A., Inamuddin & Amin, A. Nano-composite cation-exchanger polyvinyl alcohol Sn(IV) tungstate. J Therm Anal Calorim 107, 119–126 (2012). https://doi.org/10.1007/s10973-011-1534-5
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DOI: https://doi.org/10.1007/s10973-011-1534-5