Sensory layers of poly(methyl metacrylate) for capacitive sensors for analysis of the content of heavy metal cations in water
https://doi.org/10.29235/1561-8331-2024-60-1-81-88
Abstract
The results of using poly(methyl methacrylate) coatings for the development of the capacitive sensors for analyzing the content of heavy metals in water (using Ni2+ ions as example) are presented. Structural and morphological characteristics of the formed conductive nickel layer and nanostructured poly(methyl methacrylate) films were studied by atomic force microscopy. Based on the analysis of the dependence of the capacitive characteristics of the original sensor on the frequency at different concentrations of Ni2+ ions, the following operating characteristics of the sensor were established: response time – 5 min; operating range of Ni2+ ion concentrations: 1 ‧ 10–3–50 mM; lower detection limit ≈ 0,06 mg/l. It is shown that the formation of a poly(methyl methacrylate) coating on a conductive nickel layer by the spin coating method increases the service life of the sensor to eight cycles while maintaining the level of sensor sensitivity.
About the Authors
D. V. Sapsaliou
A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus; Belarusian State Pedagogical University named after Maxim Tank
Belarus
Belarus
Dmitry V. Sapsaliou – Junior researcher, A. V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus; Postgraduate Student, Belarusian State Pedagogical University named after Maxim Tank.
15, P. Brovka Str., 220072, Minsk; 18, Savieckaja Str., 220030, Minsk
G. B. Melnikova
A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus
Belarus
Belarus
Galina B. Melnikova – Ph. D. (Engineering), Senior Researcher. A. V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus.
15, P. Brovka Str., 220072, Minsk
A. V. Aksiuchyts
Belarusian State University of Informatics and Radioelectronics
Belarus
Belarus
Aliaksandr V. Aksiuchyts – Postgraduate student, Junior researcher. Belarusian State University of Informatics and Radioelectronics.
6, P. Brovka Str., 220013, Minsk
T. N. Tolstaya
A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus
Belarus
Belarus
Tatyana N. Tolstaya – Researcher. A. V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus.
15, P. Brovka Str., 220072, Minsk
D. A. Kotov
Belarusian State University of Informatics and Radioelectronics
Belarus
Belarus
Dmitry A. Kotov – Ph. D (Engineering), Associate Professor. Associate Professor of the Department. Belarusian State University of Informatics and Radioelectronics.
6, P. Brovka Str., 220013, Minsk
S. A. Chizhik
A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Science of Belarus
Belarus
Belarus
Sergei A. Chizhik – Academician, D. Sc. (Engineering), Professor, Chief researcher, A.V. Luikov Heat and Mass transfer Institute of the National Academy of Sciences of Belarus.
15, P. Brovka Str., 220072, Minsk
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