Preparation of calixarene-based sporopollenin and examination of its dichromate sorption ability
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The present study describes the preparation of a new calixarene-based sporopollenin material and its application for the removal of Na2Cr2O7 from aqueous solution. The novel calixarene-based sporopollenin material was prepared via the immobilization of dihydrazine amide derivative of p-tert-butylcalixarene (3) onto the modified sporopollenin. The newly prepared calixarene-based sporopollenin is characterized by using different analytical techniques such as FT-IR spectroscopy, scanning electron microscope and Elemental analysis. The batch wise sorption study was carried out to optimize various experimental parameters such as the effect of sorbent dosage, pH, temperature and Cr(VI) anion concentration. It has been found that the sorption of Cr(VI) anion on calixarene-based sporopollenin was highly pH dependent and maximum sorption was achieved at pH 1.5. The sorption behavior was also evaluated by Langmuir, Freundlich and Dubinin Radushkevich isotherms. The value of correlation coefficient (R 2) showed a good agreement with Freundlich isotherm model. Result of study demonstrated that calixarene-based sporopollenin proved to be highly effective for the removal of Cr(VI).
KeywordsCalixarene Sporopollenin Sorption Dichromate Proton-switchable
We would like to thank The Research Foundation of Selcuk University (BAP) for financial support of this work.
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