Mohd Arsalan

Synthesis, structural characterization, electrochemical, and electrical study of polystyrene-based manganous tungstate composite cation exchange membrane

The polystyrene-based manganous tungstate composite membrane was prepared by applying sol‐gel method. The membrane was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, differential thermal analysis, scanning electron microscopy, and (LCR) study. Membrane was found to be crystalline, the arrangement of particle was uniform, and there were no sign of visible breakage or cracks. The theoretical value of potential was determined by Teorell‐Meyer‐Sievers, method and the electrochemical property was measured by a potentiometer. From observation, it is clear that the membrane potential increases with decreasing the concentration of electrolytes and the charge density follows the reverse order of potentials. By observing transport number the mobility ratio, distribution coefficient, and charge effectiveness can be calculated very easily.

Thermodynamic evaluation and electrochemical parameters of PVC-based ion-exchange nickel tungstate composite membrane and their potential applications

PVC-based nickel tungstate is a newly synthesized composite material that has been used to make mechanically and thermally well-stable membrane. The composite material was qualitatively synthesized by the sol‐gel method of material preparation. The composite material and prepared membrane have been selected and characterized on the basis of their chemical composition, ion-exchange capacity, and FTIR, TGA, and SEM analysis. It has verified the material nature, functional groups, thermal stability plus the phase transition, surface structure, porosity, ion transportation, etc. For the measurement of ionic potential, KCl, NaCl, and LiCl strong electrolytes are used, which helps to obtain the charge density of the membrane that decided the nature of membrane performance accordingly. Teorell‐Meyer‐Sievers theoretical approach is used to obtain the important parameters of examined membrane that included the transport number, mobility ratio, charge effectiveness, etc.