Anion Extraction Properties of a New "Proton-Switchable" Terpyridin-Conjugated Calix[4]arene
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
AMER CHEMICAL SOC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A new terpyridin-conjugated calix[4]arene derivative has been synthesized via selectively substitution of p-tert-butylcalix[4]arene. The synthesized ligand was characterized by FTIR, H-1 NMR, C-13 NMR, C-13-DEPT-135 and elemental analysis. Moreover, the dichromate extraction capability of the compound regarding the removal of toxic oxyanion from aqueous solutions was discussed in a liquid-liquid extraction system. The results indicated that the pH of the solution is a key parameter for the efficient extraction of Cr(VI) and that compound 6 is partially protonated in acidic conditions. Hence, facilitating binding of dichromate results from both electrostatic interactions and hydrogen bonding. To understand the selectivity of 6, the retention of dichromate anions in the presence of NO3-, Cl-, and SO42- anions at pH 1.5 was also discussed.
Açıklama
Anahtar Kelimeler
Kaynak
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
53
Sayı
6
