Open AccessSynthesis and Characterisation of Ligand Free Cadmium Imprinted Polymer for Sensing of Cd(II) from Aqueous Solution
Author(s) -
Anuradha Baghel,
A. Raja Bhuvaneswari,
Virendra Singh,
Mannan Boopathi,
Beer Singh
Publication year - 2019
Publication title -
defence life science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.135
H-Index - 3
eISSN - 2456-379X
pISSN - 2456-0537
DOI - 10.14429/dlsj.4.14180
Subject(s) - nip , aqueous solution , cadmium , polymer , chemistry , nuclear chemistry , selectivity , polymer chemistry , materials science , organic chemistry , catalysis , composite material
Cadmium(II)-imprinted polymer [Cd(II)-IIP] was synthesized without using the conventional complexing ligand to reduce unnecessary step for complexing Cd(II). During synthesis of Cd(II)-IIP, the complete removal of Cd(II) from the polymer was confirmed using EDAX and AAS. Synthesized polymers ([Cd(II)-IIP], non-imprinted polymer (NIP) and polymer with cadmium (CdP) were also characterized and compared. SEM analysis of Cd(II)-IIP indicated the changes in surface morphology after imprinting, the polymer looked like a flaky material in comparison with NIP and CdP. BET surface area of Cd(II)-IIP (68 m2/g) was found to be more than that of NIP (24.6 m2/g) and CdP (17 m2/g). Cd(II)-IIP formed a complex with Cd(II) in the solution through carbonyl oxygen of the acrylamide as confirmed by FTIR. TGA analysis showed less char yield for Cd(II)-IIP than NIP. Cd(II)-IIP was further explored for the fabrication of ion selective electrode (ISE), which on binding with Cd(II) gave higher potential than NIP-ISE. Interference study was also performed using Cd(II)-IIP as such and also with fabricated ISE with Cd(II)-IIP using different cations such as Pb(II), Zn(II), Mn(II), Hg(II), and found that imprinted polymer showed more selectivity towards Cd(II) in aqueous solutions.