Enzyme-Like Activity of Cerium Dioxide Colloidal Solutions Stabilized with L-Malic Acid

被引：3

作者：

Filippova, A. D. ^{[1
]}

Baranchikov, A. E. ^{[1
]}

Ivanov, V. K. ^{[1
]}

机构：

[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

来源：

COLLOID JOURNAL | 2023年 / 85卷 / 05期

基金：

俄罗斯科学基金会;

关键词：

nanozymes; peroxidase-like activity; sols; aggregates; CEO2; NANOPARTICLES; POLYMALIC ACID; NANOZYMES;

D O I：

10.1134/S1061933X23600653

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the first time, stable aqueous colloidal solutions of cerium dioxide stabilized with L-malic acid have been obtained at ligand : CeO2 molar ratios of 0.2, 0.5, 1.0, and 2.0. Using dynamic light scattering, it has been shown that CeO2 sols are characterized by a narrow monomodal size distribution of aggregates, and the sols remain to be aggregatively stable in a Tris-HCl buffer solution. According to the chemiluminescence analysis of the enzyme-like activity of cerium dioxide sols with respect to hydrogen peroxide, the surface modification of the cerium dioxide particles with malic acid increases the enzyme-like activity of CeO2 up to 4.5 times.

引用

页码：782 / 794

页数：13

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