An electrochemical sensor and sorbent based on mutiwalled carbon nanotube supported ion imprinting technique for Ni(II) ion from electroplating and steel industries

Abstract

In this work for the rapid electrochemical sensing of Ni(II) ion, Multiwalled carbon nanotube based ion-imprinted polymer (MWCNT-IIP) fabricated on the platinum electrode was used. To prove the importance of MWCNT, ion imprinted (IIP) and non-imprinted polymer without MWCNT were also prepared. The synthesized polymers were characterized by FT-IR, XRD, TEM, EDAX, and TGA. The MWCNT-IIP modified electrochemical sensor could easily recognize Ni(II) ion in the presence of other metal ions. The limit of detection was found to be 0.028 µM using differential pulse voltammetric studies. The practical applicability of the modified electrode was studied using real samples collected from lake, steel and electroplating industry. The synthesized polymers were also used for the extraction of Ni(II) ion.