Synthesis of Copper(II) Oxide Nanoparticles by Anion-Exchange Resin-Assisted Precipitation and Production of Their Stable Hydrosols

IF 1.8 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Russian Journal of Inorganic Chemistry Pub Date : 2024-07-03 DOI:10.1134/s0036023623603057

A. Yu. Pavlikov, S. V. Saikova, A. S. Samoilo, D. V. Karpov, S. A. Novikova

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Abstract

Copper(II) oxide nanoparticles are promising materials for use in catalysis, biomedicine, and photovoltaics. They can also be used to prepare nanocomposites and hybrid nanoparticles. This paper presents a new one-pot method for preparing CuO nanoparticles without long-term washing and heat treatment. The proposed anion-exchange precipitation is a facile and fast process, and is easily reproducible under standard laboratory conditions. Anion-exchange precipitation of copper from copper chloride or copper sulfate solutions in the presence of the polysaccharide dextran-40 produces well-crystallized hydroxychloride Cu₂Cl(OH)₃ and hydroxysulfate Cu₄(SO₄)(OH)_6, respectively; from copper nitrate solutions, a poorly crystallized Cu(OH)₂ phase is formed. In the absence of polysaccharides, the product is copper oxide nanoparticles regardless of the anion in the precursor salt. The thus-prepared materials were used to prepare hydrosols. The hydrosols had high aggregation and sedimentation stability over a wide pH range (from 5 to 11) as shown by dynamic and electrophoretic light scattering. They were stable for more than three months at a concentration of 2 g/L (the average hydrodynamic diameter of the particles was 245 nm; the average ζ-potential was –31.1 mV). The optical and electronic properties of the prepared hydrosols imply that they could be of interest for use in photocatalysis and in optoelectronic devices.

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阴离子交换树脂辅助沉淀法合成氧化铜（II）纳米粒子并生产其稳定的水溶液

摘要氧化铜（II）纳米粒子是一种很有前途的材料，可用于催化、生物医学和光伏领域。它们还可用于制备纳米复合材料和混合纳米粒子。本文介绍了一种无需长期洗涤和热处理的单锅制备 CuO 纳米粒子的新方法。所提出的阴离子交换沉淀法是一种简便、快速的工艺，并且在标准实验室条件下易于重复。在多糖 dextran-40 的存在下，从氯化铜或硫酸铜溶液中进行阴离子交换沉淀，可分别生成结晶良好的羟基盐酸盐 Cu2Cl(OH)3 和羟基硫酸盐 Cu4(SO4)(OH)6；而从硝酸铜溶液中则会形成结晶较差的 Cu(OH)2 相。在没有多糖的情况下，无论前驱盐中的阴离子是什么，产物都是纳米氧化铜颗粒。由此制备的材料被用于制备水溶液。动态光散射和电泳光散射显示，这些水溶液在很宽的 pH 值范围（从 5 到 11）内都具有很高的聚集和沉淀稳定性。在 2 g/L 的浓度下，它们的稳定性超过三个月（颗粒的平均流体力学直径为 245 nm；平均ζ电位为 -31.1 mV）。所制备水溶液的光学和电子特性表明，它们可用于光催化和光电设备。

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来源期刊

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.