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5‐Bromo‐2,9‐bis(5,6‐diphenyl‐1,2,4‐triazin‐3‐yl)‐1,10‐phenanthrolin as an Efficient Ligand for Selective Removal of Strontium and Cobalt from Aqueous Solution
Author(s) -
Jang Jiseon,
Harwood Laurence M.,
Lee Dae Sung
Publication year - 2019
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.11706
Subject(s) - strontium , chemistry , ligand (biochemistry) , aqueous solution , cobalt , divalent , nuclear chemistry , ion , metal ions in aqueous solution , metal , extraction (chemistry) , alkaline earth metal , inorganic chemistry , medicinal chemistry , organic chemistry , receptor , biochemistry
In this study, 5‐bromo‐2,9‐bis(5,6‐diphenyl‐1,2,4‐triazin‐3‐yl)‐1,10‐phenanthroline (5‐bromo‐Ph4‐BTPhen) was synthesized and evaluated for its ability to remove major radionuclides (Cs + , Sr 2+ , and Co 2+ ). The synthesized ligand removed both Sr 2+ and Co 2+ from 1 mg/L aqueous solutions with extraction efficiencies of up to 99% at neutral and alkaline pH. The Sr 2+ and Co 2+ removal efficiencies decreased as a consequence of the higher bonding strengths of competing metal ions to the N‐donor atoms in the cavity of the ligand; competing divalent ions affected the Sr 2+ and Co 2+ removal efficiencies more than monovalent ions.