Synthesis and characterization of a novel copolymer of glyoxal dihydrazone and glyoxal dihydrazone bis(dithiocarbamate) and application in heavy metal ion removal from water
We demonstrate synthesis of water insoluble, novel copolymer PA1 from condensation of glyoxal dihydrazone and glyoxal dihydrazone bis(dithiocarbamate) monomers having high capacity to remove metal ions from aqueous solution. The presence of a high atomic percentage of nitrogen and sulfur atoms in PA1 leads to strong ligating ability with metal ions. The monomers and the polymer have been characterized by FTIR, UV–Visible spectroscopy, CHNS elemental analysis, NMR, MALDI-MS, and TG/DTA. As a proof of concept, the PA1 is tested for its ability to remove heavy metal ions Cu2+, Co2+, Fe2+, Ni2+, Mn2+, and CrO 7 2− from aqueous solutions. PA1 efficiently removed metals ions from the metal solutions. The highest absorption ability has been observed toward the iron salts where 0.969 g metal salt is absorbed by 1 g polymer. This study has implication for inexpensive and efficient polymer for purification of water.
KeywordsGlyoxal dihydrazone Bis(dithiocarbamate) Co-polymer Water purification Metal ion removal Green chemistry
The authors gratefully acknowledge the financial support from the University of Delhi, New Delhi, India. One of the authors, Jitender Gaur is thankful to the Council of Scientific and Industrial Research, India, for awarding a CSIR-SRF (NET).
- 3.Huang SP, Franz KJ, Arnold EH, Devenyi J, Fish RH. Polymer pendant ligand chemistry-5. The selective and competitive removal of Ag+, Hg2+, Cu2+, Pb2+ and Cd2+ ions from aqueous solution utilizing a n-sulfonylethylenebis(dithiocarbamate) ligand anchored on macroporous polystyrene-divinylbenzene beads. Polyhedron. 1996;15:4241–54.CrossRefGoogle Scholar
- 13.Lehotay J, Liska O, Brandsterova E, Guichon G. Liquid chromatography of metal complexes of N-disubstituted dithiocarbamic acids : III. High-performance liquid chromatography of bisdialkyldithiocarbamate complexes of copper(II), cobalt(II), zinc(II) and lead(II). J Chromatogr. 1979;172:379–83.CrossRefGoogle Scholar
- 20.Hogarth G. Progress in inorganic chemistry, vol 53, Karlin KD, editors. Hoboken: John Wiley & Sons, Inc.; 2005. doi: 10.1002/0471725587.ch2.
- 24.Euler WB, Cheng M, Zhao C. Pentacoordinated diolefinic rhodium(I) organocomplexes with α-diimine ligands. Crystal structures of [Rh(Nbd)(LL)(PPh3)]ClO4(Nbd = norbornadiene; LL = Bdh, biacetylidihydrazone; Pvdh, pyruvaldihydrazone; Bda, biacetyldianil). J Organomet Chem. 2000;601:311–9.CrossRefGoogle Scholar
- 27.Granell J, Green MLH, Lowe VJ, Marder SR, Mountford P, Saunders GC, Walker NM. Studies on the synthesis and electrochemistry of crown ether dithiocarbamates and the molecular dynamics of bis(aza-15-crown-5)thiuram disulphide. Crystal structure of cobalt tris[(aza-15-crown-5)dithiocarbamate]. J Chem Soc Dalton Trans. 1990; 605–614.Google Scholar
- 28.Kaul KN, Malik AK, Lark BS, Rao ALJ. Spectrophotometric determination of cobalt, nickel, copper, palladium and molybdenum using sodium diethyldithiocarbamate in the presence of surfactants. Rev Roum Chim. 2000;45:221–6.Google Scholar