Synthesis, characterization and electrical conductivity measurement studies of poly-o-anisidine Sn(IV) phosphate [POASn(IV)P] nano-composite cation-exchange material

Ion-exchange studies on poly-o-anisidine Sn(IV) phosphate nano composite and its application as Cd(II) ion-selective membrane electrode

“…Ion-exchange capacity of the material was found to be nearly stable upto 150 0 C, and it retained about 79.35% of the initial ion-exchange capacity when heated upto 250 0 C ( Table 2). It is clear from the thermal studies (TGA) [19] of the material that up to 100 0 C only 5.82% weight loss was observed, which may be due to the removal of external H 2 O molecules present on the surface of the composite. Further weight loss of mass approximately 7% between 100 and 250 0 C may be due to the slight conversion of inorganic phosphate into pyrophosphate.…”

“…The composite cation-exchanger was prepared by the sol-gel mixing of poly-o-anisidine, an organic polymer, into the inorganic precipitate of Sn(IV) phosphate [19]. In this process, when the gels of poly-o-anisidine were added to the white inorganic precipitate of Sn(IV) phosphate with constant stirring, the resultant mixture turned slowly into black colored slurries.…”

“…In our present studies we attempted to obtain a new heterogeneous precipitate based membrane electrode by using the poly-o-anisidine Sn(IV) phosphate, a nano composite cation-exchanger (ionomer) as an electroactive material for determination of Cd(ІІ) ion present in the sample solution. In our previous study we characterized poly-o-anisidine Sn(IV) phosphate [19].…”

Ammonia vapor sensing properties of polyaniline–titanium(IV)phosphate cation exchange nanocomposite

“…Organic-inorganic composites synthesized in our laboratory have shown excellent cation exchange behavior, electrical conductivity, high stability, reproducibility, and selectivity for heavy toxic metal ions as discussed by Khan et al [21][22][23][24][25][26][27]. The most obvious advantage of organic-inorganic hybrid is that dissimilar properties of organic and inorganic components in one material can give desirable properties on combination.…”

Electrically conductive membrane of polyaniline–titanium(IV)phosphate cation exchange nanocomposite: Applicable for detection of Pb(II) using its ion-selective electrode

“…In the recent years, electrically conductive organic-inorganic ion-exchange nanocomposite materials have emerged as an advanced class of materials as they possess unique properties due to synergism between the components [12][13][14]. Such a modified nanocomposite materials can be used in membrane preparation (PVC supported) and may be applicable in various membrane processes such as ultra filtration, nanofiltration, fuel cell applications, separation of heavy toxic metal ions and in making ion selective membrane electrode.…”