Removal of heavy metal ions from aqueous solution by azocalix[4]arene
Küçük Resim Yok
Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
TAYLOR & FRANCIS INC
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study presents the preparation, characterization, and sorption properties of new chromogenic azocalix[4]arene based oligomers (1a, 2a and 3a) towards some selected heavy metal (Ag+, Hg+, Hg2+, Co2+, Ni2+, Cu2+, Cd2+ and Cr3+) cations. These compounds have been synthesized via polycondensation reactions involving 25,27-diethylacetoxy-26,28-dihydroxy-5,17-bis(4-nitrophenylazo)calix[4]arene(1), 25,27-diethyl acetoxy-26,28-dihydroxy-5,17-bis(4-ethylphenylazo)calix[4]arene (2), or 25,27-diethyl acetoxy-26,28-dihydroxy-5,17-bis(4-bromophenylazo)calix[4]arene (3) with 1,4-bisamino methyl benzene. Two-phase sorption properties of azocalixarene oligomers (1a, 2a and 3a) towards the selected metal cations are reported. The binding properties of these oligomers towards the selected metal cations were observed to be higher than those of monomeric analogs. It is suggested that this increased binding ability arises from highly rigid azo (-N=N-) group moiety at the upper rim of calix[4]arene in the oligomeric skeleton.
Açıklama
International Workshop on Urbanisation, Land Use, Land Degradation and Environment -- SEP 28-OCT 01, 2009 -- Denizli, TURKEY
Anahtar Kelimeler
Azocalixarene, Batch sorption, Calix[4]arene, Heavy metals, Oligomer, Polyamide
Kaynak
DESALINATION AND WATER TREATMENT
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
26
Sayı
01.03.2020
