Creating the рH-sensitive corrosion-inhibiting container structures based on the azole-intercalated molybdenum oxide particles with oligooxometalate shell
https://doi.org/10.29235/1561-8323-2022-66-3-287-293
Abstract
The container structures consisting of the core made of layered molybdenum oxide intercalated with 3-amono-1,2,4-triazole (it behaves as the corrosion inhibitor) capped with the shell made of polymerized tungsten oxide were synthesized employing the polycondensation of oxocompounds. It is shown that in the acid (pH < 5.5) and alkali (pH > 8.5) media, the coating continuity appears to be broken reversibly, which facilitates the emission of the encapsulated compounds from the containers. The intrinsic redox activity inherent into the oligooxometalate shell permits one to immobilize the synthesized containers by co-precipitation with galvanic nickel, whereas the possibility to open the container as a result of local pH value variations accompanying the corrosion process ensures the autonomic corrosion protection of the resultant metal-matrix coatings.
Supporting agencies: The work was carried out within the framework of the BRFFR (grant no. X20P-073). E. V. Skorb is grateful to the RFBR for support (grant no. 20-53-00043).
About the Authors
A. S. Logvinovich
Belarusian State University
Belarus
Belarus
Logvinovich Alexander S. – Ph. D. (Chemistry), Associate Professor
4, Nezavisimosti Ave., 220050, Minsk
T. V. Sviridova
Belarusian State University
Belarus
Belarus
Sviridova Tatiana V. – D. Sc. (Chemistry), Professor
4, Nezavisimosti Ave., 220050, Minsk
E. V. Skorb
ITMO University
Russian Federation
Russian Federation
Skorb Ekaterina V. – Ph. D. (Chemistry), Associate Professor, Director. Infochemistry Scientific Center
9, Lomonosov Str., St. Petersburg, 191002
D. V. Sviridov
Belarusian State University
Belarus
Belarus
Sviridov Dmitry V. – Corresponding Member, D. Sc. (Chemistry), Professor, Dean of the Faculty
4, Nezavisimosti Ave., 220050, Minsk
V. E. Agabekov
Institute of Chemistry of New Materials of the National Academy of Sciences of Belarus
Belarus
Belarus
Agabekov Vladimir E. – Academician, D. Sc. (Chemistry), Professor, Honorary Director
36, F. Skorina Str., 220141, Minsk
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