Environmental Science and Pollution Research

, Volume 25, Issue 20, pp 20012–20022 | Cite as

Tracking metal ions with polypyrrole thin films adhesively bonded to diazonium-modified flexible ITO electrodes

  • Momath Lo
  • Abdou K. D. Diaw
  • Diariatou Gningue-SallEmail author
  • Jean-Jacques AaronEmail author
  • Mehmet A. Oturan
  • Mohamed M. ChehimiEmail author
Research Article


Adhesively bonded polypyrrole thin films doped with benzene sulfonic acid (BSA) were electrodeposited on aminobenzenediazonium-modified flexible ITO electrodes and further employed for the detection of Pb2+, Cu2+, and Cd2+ metal ions in aqueous medium. The aminophenyl (AP) adhesive layer was grafted to ITO by electroreduction of the in situ generated parent diazonium compound. Polypyrrole (PPy) thin films exhibited remarkable adhesion to aminophenyl (ITO-AP). The strongly adherent polypyrrole films exhibited excellent electroactivity in the doped state with BSA which itself served to chelate the metal ions in aqueous medium. The surface of the resulting, modified flexible electrode was characterized by XPS, SEM, and electrochemical methods. The ITO-AP-PPy electrodes were then used for the simultaneous detection of Cu2+, Cd2+, and Pb2+ by differential pulse voltammetry (DPV). The detection limits were 11.1, 8.95, and 0.99 nM for Cu2+, Cd2+, and Pb2+, respectively. In addition, the modified electrodes displayed a good reproducibility, making them suitable for the determination of heavy metals in real wastewater samples.


Flexible ITO Diazonium salts Polypyrrole Electropolymerization Heavy metal ions Electroanalysis 



ML gratefully thanks the Cooperation and Cultural Action Service of the French Embassy in Senegal for a PhD grant.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Faculté des SciencesUniversité Cheikh Anta DiopDakarSenegal
  2. 2.Laboratoire Géomatériaux et EnvironnementUniversité Paris-EstMarne-la-Vallée cedex 2France
  3. 3.Université Paris Est, CNRS, ICMPE (UMR 7182)ThiaisFrance

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