Author(s):
Tanvir Arfin^1a, Simin Fatma²

Author Affiliation:
¹Department of Chemistry, Uka Tarsadia University, Maliba Campus, Gopal Vidyanagar, Bardoli-394350, India
²Department of Biotechnology, Tilka Manjhi Bhagalpur University, Bhagalpur,812007, India

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

As stated in the previous work of ours in composite polystyrene-titatinum arsenate (PS-Ti-As), both of us studied the impedance behaviour of the Ps-Ti-As composite membrane for distinct electrolytic conditions arranged for an experiment. In the present prescribed report, the capacitance and resistance measurements were conducted by enhancing contrary concentrations that is 0.0001 c (M) 1 of BaCl2 as well as CaCl2 of 1:1 electrolyte solutions at isothermal process where temperature remains constant basically at 250.1°C. For calculating the membrane resistance (RM), capacitance (CM), reactance (Xx), the measurement of capacitance and resistance were used again and were also formulated to create the impedance (Z) value, as such impedance is an essential characteristic for controlling the membrane phenomena. The dielectric constant also increased with an increase of temperature at 1 kHz oscillatory frequency. According to the simple equivalent electrical circuit model, the data of impedance was evaluated which was found following the theoretical prediction which ranges high frequency. At the membrane-electrolyte interface, the electrical double layer was influenced systematically. The important role played on the geometric capacitor by the charge of polarization forming a diffused double layer which later affected the overall membrane capacitance. The motion of ions through it, which was marked on double-layer capacitance was affected due to the applied frequencies across the membrane. Finally, the composite material was also tested for its antibacterial activity against numerously bacterial cultures that includes Escherichia coli, Bacillus thuringienisis and Pseudomonas aeruginosa. The result of these studies also signifies the activity of the composite as compared with a well-known antibiotic that is tetracycline and therefore, can be specifically used as an antibacterial agent.

KEYWORDS:
Polystyrene-titanium-arsenate (PS-Ti-As) composite; capacitive reactance; capacitance; impedance; interfacial double layer capacitance; antibacterial activity