Catalytic Properties of a Nanozyme Based on Silver Nanoparticles Immobilized into a Polymethacrylate Matrix

Catalytic Properties of a Nanozyme Based on Silver Nanoparticles Immobilized into a Polymethacrylate Matrix Научная публикация

Журнал

Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210

Вых. Данные

Год: 2025, Том: 66, Номер: 2, Страницы: 232-239 Страниц : 8 DOI: 10.1134/s002315842560035x

Авторы

Bragina S.K. ¹ , Gavrilenko N.A. ¹ , Saranchina N.V. ¹ , Gavrilenko M.A. ²

Организации

1	National Research Tomsk State University, Tomsk, 634050 Russia
2	National Research Tomsk Polytechnic University, Tomsk, 634050 Russia

The catalytic peroxidase-like properties of silver nanoparticles (Ag NPs) immobilized into a polymethacrylate matrix (PMM) were studied. The Ag NPs were prepared by thermal reduction of silver cations preimmobilized in a PMM. The morphology of the nanocomposite was studied using scanning electron microscopy (SEM), and the average size of the synthesized individual spherical nanoparticles was 18 ± 5 nm. It was demonstrated that silver nanoparticles immobilized in a polymethacrylate matrix (PMM–Ag0) exhibited pronounced peroxidase-like activity in the oxidation reaction of a chromogenic substrate, indigo carmine, under the action of H2O2. The Michaelis–Menten model was used to estimate the kinetic parameters of the reaction. The Michaelis constants (Km) of 0.1 and 1.0 mM for indigo carmine and H2O2, respectively, indicated a strong affinity of the substrates to silver nanoparticles in PMM.

Bragina S.K. , Gavrilenko N.A. , Saranchina N.V. , Gavrilenko M.A.
Catalytic Properties of a Nanozyme Based on Silver Nanoparticles Immobilized into a Polymethacrylate Matrix
Kinetics and Catalysis. 2025. V.66. N2. P.232-239. DOI: 10.1134/s002315842560035x WOS РИНЦ

Поступила в редакцию:	29 нояб. 2024 г.
Принята к публикации:	17 апр. 2025 г.
Опубликована online:	5 авг. 2025 г.

Web of science:	WOS:001544860300007
РИНЦ:	82714529