A new electrochemical sensor for polymeric solution concentration based on zinc oxide nanorods
Volume Title: 1
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
In this study, a new electrochemical sensor is represented for polymeric solution concentration measurement by using a zinc oxide (ZnO) nanorods modified electrode. The simple hydrothermal method was used for ZnO nanorods growth on the electrode surface. The solution of poly vinyl alcohol (PVA) in water was selected as a working polymeric solution and the potentiometric method was used as an electrochemical transducer. The response of the electrode was studied for different concentrations of polymeric solution in the range of 100 pg/ml – 100 μg/ml of PVA. Also, the effect of pH on the electrode response was investigated. The sensor showed a linear behavior between potential and logarithm of PVA concentration in the range of 100 pg/ml – 1 μg/ml. Consequently, the proposed concentration sensor may be used for different polymeric solution owing to the simple fabrication and low cost as well as fast and easy usage.