Hydrothermal Synthesis of Aqueous Sols of Lactic Acid-Stabilized Nanocrystalline Hafnium Dioxide and Their Enzyme-Like Activity

IF 1.8 3区 化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR
G. S. Taran, E. D. Sheichenko, M. A. Popkov, K. N. Novoselova, Yu. A. Kochenkova, A. D. Filippova, A. E. Baranchikov, V. K. Ivanov
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引用次数: 0

Abstract

A method was developed to produce aqueous sols of nanocrystalline hafnium dioxide (with a hydrodynamic diameter of 20–35 nm), which were stabilized by lactic acid (lactate ions) and characterized by high colloidal stability (ζ-potential –29 mV). The method is based on hydrothermal treatment of a preliminarily obtained complex compound of hafnium with lactic acid in the presence of urea at temperatures of 180 and 220°C for 48 and 96 h. Chemiluminescent analysis in a model reaction of luminol oxidation determined that nanocrystalline hafnium oxide in the sols exhibits dose-dependent prooxidant activity toward hydrogen peroxide and thus has peroxidase-like properties.

Abstract Image

水热合成乳酸稳定纳米二氧化铪水溶液及其酶样活性
建立了一种制备纳米二氧化铪水溶胶的方法(水动力直径为20-35 nm),该溶胶由乳酸(乳酸离子)稳定,具有高胶体稳定性(ζ电位-29 mV)。该方法是基于在尿素存在下,在180℃和220℃的温度下,对初步得到的铪与乳酸的络合化合物进行水热处理48和96小时。对鲁米诺氧化模型反应的化学发光分析确定,溶胶中的纳米晶氧化铪对过氧化氢表现出剂量依赖性的促氧化活性,因此具有过氧化物酶样性质。
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来源期刊
Russian Journal of Inorganic Chemistry
Russian Journal of Inorganic Chemistry 化学-无机化学与核化学
CiteScore
3.10
自引率
38.10%
发文量
237
审稿时长
3 months
期刊介绍: Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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