Authors: Ella Kh Kazakova Julia E Morozova Diana A Mironova Alexander I Konovalov
Publish Date: 2011/11/24
Volume: 74, Issue: 1-4, Pages: 467-472
Abstract
Four waterinsoluble tetradodecyloxybenzylcalix4resorcinarenes with various functional groups at the upper macrocycle rim unsubstituted calix4resorcinarene 1 carboxylic acid derivative 2 ethyl ester derivative 3 and aminoethylamide derivative 4 were synthesized and tested as sorbents for watersoluble azo dyes methyl orange MO acid orange 5 AO 5 and congo red CR by solid–liquid extraction method without background electrolyte It was observed that the sorption of azo dyes reaches 99 for sorbent 4 which is partial protonated in contact with water and becomes able to electrostatic interactions with the dyes It was demonstrates that calixresorcinarene 4 has the excellent sorption capacity for AO5 1305 mg dye per g of sorbent due to effective calixresorcinarene—dye association in equal molar ratio mode
Keywords: