Kurumun Atıf Alan Makalesi
Atıf Alan Yayın
Removal efficiency of a calix[4]arene-based polymer for water-soluble carcinogenic direct azo dyes and aromatic amines
Scopus
Toplam 131 atıf DOI
A Mannich base derivative of 5,11,17,23-tetrakis-[(1,4-dioxa-8-azaspiro-[4.5]decanyl)methyl]-25,26,27,28-tetrahydroxy calix[4]arene 3 was synthesized by the treatment of calix[4]arene with a cyclic secondary amine (1,4-dioxa-8-azaspiro-[4.5]decane) and formaldehyde. The compound 3 was treated with dibromoxylene to obtain a calix[4]arene-based copolymer 4. In batch sorption experiments of selected carcinogenic azo dyes and aromatic amines, the compounds 3 and 4 were found to be a better sorbent for azo dyes than for the aromatic amines. It was observed that the percentage of azo dye removal was 95-99% for compound 3 and 83-97% for 4 when the pH of the dye solution was in the range of 2.0-8.0. The sorption of azo dyes and aromatic amines by calix[4]arenes-based compounds indicates that amino groups play the major role for the formation of hydrogen bonds and electrostatic interactions. © 2008 Elsevier B.V. All rights reserved.
Atıf Kaynağı
Atıf Yapan Yayın
Synthesis of amino-substituted p-tert-butylcalix[4]arene for the removal of chicago sky blue and tropaeolin 000 Azo dyes from aqueous environment
Scopus
Havuzumuzda 18 atıf almış
In this study, we have reported the synthesis of new amino-substituted p-tert-butylcalix[4]arene (3) and its application for the removal of two carcinogenic azo dyes, i.e., Chicago Sky Blue (CSB) and Tropaeolin 000 (TP) from aqueous environment. The newly synthesized calix-ligand 3 is characterized by FT-IR and 1H NMR spectroscopy as well as elemental analysis. The extraction efficiency of newly calix-ligand 3 for CSB and TP dyes from aqueous media was evaluated through liquid-liquid extraction experiments. The newly synthesized calix-ligand 3 showed outstanding extraction percentage and maximum percent extraction, i.e., 97 and 96 % of CSB and TP dyes was achieved at pH 9, respectively. During the extraction process, effect of various parameters was monitored and found that extraction is highly dependent on pH and salinity. Moreover, cyclic structure, cavity size, functional groups of the calixarene derivative, hydrophobicity, and the ionic property of guest molecules also affect the extraction efficiency. The comparative data prop up calix-ligand 3 as an effective extractant for both CSB and TP dyes. © 2013 Springer Science+Business Media Dordrecht.
Atıf Yapan Makale Bilgileri
Kurumlar (2)
Selçuk Üniversitesi
Selçuklu, Turkey
University of Sindh
Jamshoro, Pakistan