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A new way of synthesis nanohybrid cation‐exchanger applicable for membrane electrode
Author(s) -
Khan Anish,
Aslam Parwaz Khan Aftab,
Asiri Abdullah M.,
Abdul Rub Malik,
Azum Naved
Publication year - 2014
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22796
Subject(s) - potentiometric titration , materials science , polyaniline , scanning electron microscope , electrode , fourier transform infrared spectroscopy , selectivity , analytical chemistry (journal) , ion exchange , membrane , ion selective electrode , spectrophotometry , alkali metal , nuclear chemistry , chemical engineering , inorganic chemistry , ion , composite material , polymer , chemistry , chromatography , catalysis , organic chemistry , polymerization , biochemistry , engineering
A novel polymeric composite namely, PANI‐PW/Ag (silver doped polyaniline phosphotungstate) was expediently obtained by sol‐gel method. PANI‐PW/Ag was characterized by Fourier transform infrared spectroscopy, X‐ray powder diffraction, UV–vis spectrophotometry, scanning electron microscopy, and thermogravimertic analysis. On the basis of ion exchange capacity and distribution studies, PANI‐PW/Ag, highly selective and sensitive to Cu(II), was used for the preparation of ion selective membrane for Cu(II). The electrode exhibits good potentiometric response for Cu(II) over a wide concentration range (1.0 × 10 −1 −5.0 × 10 −6 mol) with Nernstian slope of 27.8 mV per decade. Response time of the electrode is 9 s and it could be used for a period of 3 month and exhibits good selectivity toward Cu 2+ in comparison to alkali, alkaline earth, transition, and heavy metal ions, with no interference caused by other heavy metals. POLYM. COMPOS., 35:1436–1443, 2014. © 2013 Society of Plastics Engineers