Detergent-modified catalytic and enzymomimetic activity of silver and palladium nanoparticles biotemplated by Pyrococcus furiosus ferritin

Authors

PEŠKOVÁ Marie ILKOVICS Ladislav HYNEK David DOSTALOVA Simona MARQUEZ SANCHEZ - CARNERERO Esther Maria REMEŠ Marek HEGER Zbynek PEKAŘÍK Vladimír

Year of publication 2019
Type Article in Periodical
Magazine / Source Journal of Colloid and Interface Science
MU Faculty or unit

Faculty of Medicine

Citation
Web https://www.sciencedirect.com/science/article/pii/S0021979718313122?via%3Dihub
Doi http://dx.doi.org/10.1016/j.jcis.2018.11.005
Keywords Ferritin; Detergents; Palladium nanoparticles; Silver nanoparticles; Enzymomimetic activity
Description Palladium and silver nanoparticles (NPs) anchored at the outer surface of ferritin form stable suspension of non-coated particles that possess several catalytic and enzymomimetic activities. These activities are strongly affected by detergents that significantly influence the reaction efficiency and specificity. Reductive dehalogenation of various azo dye substrates shows strong differences in reactivity for each substrate-detergent pair. Reductive dehalogenation is negatively influenced by cationic detergents while catalytic depropargylation is severely impaired by polyethylene oxide containing detergents that is an important finding in respect to potential biorthogonal applications. Moreover, Suzuki-Miyaura reaction is promoted by polyethylene oxide containing detergents but some of them also facilitate dehalogenation. Enzymomimetic peroxidase activity of silver NPs can be detected only in presence of sodium dodecyl sulfate (SDS) while peroxidase activity of palladium NPs is enhanced by SDS and sodium deoxycholate.
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