Journal of Thermal Analysis and Calorimetry

, Volume 112, Issue 2, pp 1137–1143 | Cite as

Synthesis and characterization of a novel copolymer of glyoxal dihydrazone and glyoxal dihydrazone bis(dithiocarbamate) and application in heavy metal ion removal from water

  • Jitender Gaur
  • Shilpa Jain
  • Rohit Bhatia
  • Arun Lal
  • Narender Kumar Kaushik


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.


Glyoxal 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).

Supplementary material

10973_2013_3136_MOESM1_ESM.docx (892 kb)
Supplementary material 1 (DOCX 891 kb)


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  • Jitender Gaur
    • 1
    • 2
    • 3
  • Shilpa Jain
    • 2
    • 3
  • Rohit Bhatia
    • 1
  • Arun Lal
    • 1
  • Narender Kumar Kaushik
    • 1
  1. 1.Department of ChemistryUniversity of DelhiDelhiIndia
  2. 2.J & S Research and InnovationsNew DelhiIndia
  3. 3.CSIR-National Physical LaboratoryDr. K. S. Krishnan MargNew DelhiIndia

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