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Reference type: Journal
Authors: Roy AC, Nisha VS, Dhand C, Ali MA, Malhotra BD
Article Title: Molecularly imprinted polyaniline-polyvinyl sulphonic acid composite based sensor for para-nitrophenol detection.
Publication date: 2013
Journal: Analytica Chimica Acta
Volume: 777
Page numbers: 63-71.
DOI: 10.1016/j.aca.2013.03.014
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0003267013003309

Abstract: We report results of the studies relating to the fabrication and characterization of a conducting polymer based molecularly imprinted para-nitrophenol (PNP) sensor. A water pollutant, para-nitrophenol is electrochemically imprinted with polyvinyl sulphonic acid (PVSA) doped polyaniline onto indium tin oxide (ITO) glass substrate. This PNP imprinted electrode (PNPI-PANI-PVSA/ITO) prepared via chronopotentiometric polymerization and over-oxidation is characterized by Fourier transform infra-red spectroscopy (FT-IR), UV-visible (UV-vis) spectroscopy, contact angle (CA), scanning electron microscopy (SEM), cyclic voltammetry (CV) and differential pulse voltammetry (DPV) studies. The response studies of PNPI-PANI-PVSA/ITO electrode carried out using DPV reveal a lower detection limit of 1 x 10-3 mM, improved sensitivity as 1.5 x 10-3 A mM-1 and stability of 45 days. The PNPI-PANI-PVSA/ITO electrode shows good precision with relative standard deviation of 2.1% and good reproducibility with standard deviation of 3.78%
Template and target information: para-nitrophenol, PNP, 4-nitrophenol
Author keywords: molecular imprinting, conducting polymer, polyaniline, Para-nitrophenol, Polyvinyl sulphonic acid


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