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
收藏
页码：782 / 794
页数：13
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