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IF 2.1 4区材料科学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Nanoparticle Research Pub Date : 2025-03-19 DOI:10.1007/s11051-025-06279-1

Bojun Tang, Huarui Xu, Yunyun Zhao, Shenfeng Long, Tingting Wei, Dongbin Wei, Haizhen Huang, Yinggui Mo, Guisheng Zhu, Xupeng Jiang

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引用次数: 0

摘要

纳米 CaCO3 粉体广泛应用于电子陶瓷、高档涂料等领域。随着技术的发展，应用领域对其粒度和分散性提出了更高的要求。本文采用砂磨-气泡碳化法一步合成了纳米 CaCO3 粉体，并探讨了单分散纳米 CaCO3 的形成机理。结果表明，Ca(OH)2 的粒径对 CaCO3 的粒径有显著影响。碳化过程中的砂磨能有效促进 Ca(OH)2 的溶解，同时有效控制 CaCO3 的粒度和均匀性，从而获得颗粒细化、分散性高的 CaCO3 粉体。在优化工艺下，将 Ca(OH)2 的预砂时间控制在 20 分钟，Ca(OH)2 浓度控制在 1.5 mol/L，可获得纯方解石相 CaCO3 粉末。SEM 平均粒度为 60 ± 10 nm，粒度分布 D50 为 0.073 μm，通过比表面积测试计算的粉末等效直径约为 71 nm。这些数值相互吻合，表明 CaCO3 粉末是单分散的。该研究为利用工业碳化大规模制备单分散纳米 CaCO3 粉体提供了一种简单有效的方法。

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Preparation and properties of monodisperse nano-CaCO3 powders

Nano-CaCO₃ powders are widely used in electronic ceramics, high-grade coatings and other fields. With the development of technology, higher requirements have been put forward for its particle size and dispersibility in applications. In this paper, we synthesized nano-CaCO₃ powders in one step using the sand milling-bubble carbonization method and explored the formation mechanism of monodisperse nano-CaCO₃. The results show that the particle size of Ca(OH)₂ has a significant effect on the particle size of CaCO₃. The sand milling during the carbonization process can effectively promote the dissolution of Ca(OH)₂ and, at the same time, effectively control the particle size and homogeneity of CaCO₃, thus obtaining CaCO₃ powders with refined grains and high dispersibility. Under the optimized process, by controlling the pre-sanding time of Ca(OH)₂ to 20 min and the Ca(OH)₂ concentration to 1.5 mol/L, pure calcite-phase CaCO₃ powder was achieved. The SEM average particle size was 60 ± 10 nm, the particle size distribution D₅₀ was 0.073 μm, and the equivalent diameter of the powder calculated by the specific surface area test was about 71 nm. These values were in good agreement with each other, indicating that the CaCO₃ powder is monodisperse. This study provides a simple and effective method for the large-scale preparation of monodisperse nano-CaCO₃ powders using industrial carbonization.

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来源期刊

Journal of Nanoparticle Research 工程技术-材料科学：综合

CiteScore

4.40

自引率

4.00%

发文量

198

审稿时长

3.9 months

期刊介绍： The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size. Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology. The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.