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Physical-Chemical Properties of Nanosized Cerium Dioxide Synthesized via Different Methods for Biomedical Application
Theoretical and Experimental Chemistry ( IF 1 ) Pub Date : 2021-11-13 , DOI: 10.1007/s11237-021-09696-0
I. P. Timashkov 1 , Yu. Shlapa 1 , A. Belous 1 , K. Veltruska 2
Affiliation  

A series of CeO2 nanoparticles was synthesized by precipitation in reverse microemulsions in the presence of mixed aqueous–alcoholic solutions at variable and constant medium pH. It is shown that these methods promote the formation of non-agglomerated CeO2 particles with a size less than 15 nm. TEM and XPS methods showed that the ratio of Ce3+ /Ce4+ ions increases on the surface when the size of CeO2 nanoparticles is decreased. The synthesized CeO2 nanoparticles show high stability in aqueous suspensions without using additional stabilizers (𝜁 > +35 mV), which is important for medical and biological application.



中文翻译:

不同方法合成的纳米二氧化铈的理化性质应用于生物医学

在可变和恒定的介质 pH 值下,在混合水-醇溶液存在下,通过在反相微乳液中沉淀来合成一系列 CeO2 纳米颗粒。结果表明,这些方法促进了尺寸小于15nm的非团聚CeO 2颗粒的形成。TEM 和XPS 方法表明,当CeO 2纳米颗粒的尺寸减小时,表面上Ce 3+ /Ce 4+离子的比率增加。合成的 CeO 2纳米颗粒在水悬浮液中表现出高稳定性,无需使用额外的稳定剂 (𝜁 > +35 mV),这对医学和生物应用很重要。

更新日期:2021-11-13
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