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Removal of Cr(VI) through calixarene based polymer inclusion membrane from chrome plating bath water
Scopus
Toplam 161 atıf DOI
In this study, a calixarene based polymer inclusion membrane was employed for the removal of Cr(VI) from chrome plating bath water. The prepared polymer inclusion membrane was characterized by using Fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM) and contact angle measurements. The effects of carrier concentration, plasticizer type and temperature on the transport, the membrane's stability and thickness were examined. The transport efficiency of Cr(VI) using the polymer inclusion membrane was approximately 97.69%. The kinetic results demonstrated that Cr(VI) can be transported from the chrome plating bath water to the acceptor phase with high selective and efficiency. The experimental results showed the prepared polymer inclusion membrane (PIM) can be used effectively for the removal of Cr(VI) from the industrial wastewater.
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Highly sensitive fluorometric detection of Zn2+ ion by calix[4]arene derivative appended 4-biphenylcarbonitrile
Scopus
Havuzumuzda 20 atıf almış
A novel calix[4]arene derivative bearing 4-biphenylcarbonitrile unit (CCP) was developed for the selective fluorescent sensing of Zn2+ with a discriminating enhancement of 14-folds over the other metal ions. CCP exhibited highly selective and sensitive fluorescence “off-on” recognition to Zn2+ with a 1:1 binding stoichiometry in aqueous solution (EtOH/H2O, 8/2, v/v). The binding constant was calculated as 3.50 × 105 M−1 with detection limit of 0.31 μM, which presented a pronounced sensitivity toward Zn2+ ion. To check its applicability, an easy prepared test paper strip of CCP was made for rapid and selective detection of Zn2+. Also, the determination of Zn2+ in water samples was evaluated. Otherwise, the results demonstrated that the binding between CPP and Zn2+ is chemically reversible in presence of only cysteine among the various amino acids and anions, resulting in “on–off” type sensing of cysteine.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey