Preparation and characterization of new and novel Poly-o-Toluidine Sn(II) silicotungstate ternary nanocomposite and its environment application as indicator electrode

Abstract

Advanced poly(O-Toluidine) Sn(II) silicotungstate (POTSn(II)SiO2WO3) ternary nanocomposite synthesized by the extremely well-known simple sol–gel method. We have selected a low-cost o-toluidine monomer initiator and abundantly available metal of divalent tin with the silicon tungstate moieties that may work as the exchange sites for the metal ions. The poly(O-toluidine) Sn(II) silicotungstate was prepared by the oxidative polymerization of o-toluidine by potassium persulphate in situ mixings of the Sn(II) tungstate prepared in the separate conical flask at 5 pH. The obtained composite was characterized by various spectrophotometric techniques viz, SEM-EDX, XRD, TGA, FTIR, and its physicochemical characterization was carried out by determining its potential as an ion-selective membrane electrode. The ion-selective membrane was prepared and characterized for, porosity, swelling, and thickness. Based on high porosity and low thickness, the membrane was selected for further studies for the preparation of the selective membrane electrode and found selective for Cd2+. Based on the calibration curve, the Nernstian response was found near the Nernstian response (29.74), good pH range, and broad selectivity range of the metal ion. This ion-selective membrane electrode would be utilized for the determination of metal in unknown samples.

Keywords

• Conducting polymer
• Nanocomposite
• FT-IR
• Ion-exchangers
• Host–guest system