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

IF 1.4 4区化学 Q4 CHEMISTRY, PHYSICAL

Colloid Journal Pub Date : 2023-12-12 DOI:10.1134/s1061933x23600653

A. D. Filippova, A. E. Baranchikov, V. K. Ivanov

引用次数: 0

Abstract

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 СеО₂ up to 4.5 times.

Abstract Image

查看原文本刊更多论文

用 L-苹果酸稳定的二氧化铈胶体溶液的酶样活性

摘要本文首次在CeO2摩尔比为0.2、0.5、1.0和2.0的条件下，获得了l -苹果酸稳定二氧化铈的稳定胶体水溶液。动态光散射表明，CeO2溶胶具有聚集体尺寸窄的单峰分布特征，并且在Tris-HCl缓冲溶液中保持聚集体稳定。根据对二氧化铈溶胶相对于过氧化氢的类酶活性的化学发光分析，苹果酸对二氧化铈颗粒的表面改性使СеО2的类酶活性提高了4.5倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Colloid Journal 化学-物理化学

CiteScore

2.20

自引率

18.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.