Introduction

Rapid and accurate determination of trace amounts of C₂H₅OH in aqueous media of various origins is very important. The desire to improve the sensitivity and selectivity, as well as the durability of biosensors, has generated a huge amount of research. In our work, a peroxidase-type biomimetic sensor using Ag as a transducer was studied through potentiometric research.

Methods

The experiments were carried out in an electrochemical cell. The experimental setup for these studies included an electrode part, a cell, and a B7-21A universal voltmeter. The electrode part of the installation consisted of a reference electrode (Ag/AgCl/Cl^-) and a biomimetic sensor (TPhPFe³⁺/Al₂O₃/electrode) manufactured by us. The electrochemical installation was equipped with a magnetic stirrer to create an equilibrium solution. The background solution was double-distilled water.

Results

As a result of the research work, we found that the biomimetic sensor developed by TPhPFe³⁺/Al₂O₃/Ag allowed one to determine a given concentration in a few seconds. The sensitivity threshold was 10^-6 mass%.

Conclusions

The developed peroxidase-type biomimetic sensor based on smart material detected a low concentration of ethyl alcohol. The developed and synthesized peroxidase-type biomimetic sensor based on TPhPFe3+/Al2O3/Ag was highly sensitive, stable, and remained inactive for a long time. The sensitivity threshold for C2H5OH was 10-6 wt.%.