{"title":"Preparation and properties of monodisperse nano-CaCO3 powders","authors":"Bojun Tang, Huarui Xu, Yunyun Zhao, Shenfeng Long, Tingting Wei, Dongbin Wei, Haizhen Huang, Yinggui Mo, Guisheng Zhu, Xupeng Jiang","doi":"10.1007/s11051-025-06279-1","DOIUrl":null,"url":null,"abstract":"<div><p>Nano-CaCO<sub>3</sub> 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-CaCO<sub>3</sub> powders in one step using the sand milling-bubble carbonization method and explored the formation mechanism of monodisperse nano-CaCO<sub>3</sub>. The results show that the particle size of Ca(OH)<sub>2</sub> has a significant effect on the particle size of CaCO<sub>3</sub>. The sand milling during the carbonization process can effectively promote the dissolution of Ca(OH)<sub>2</sub> and, at the same time, effectively control the particle size and homogeneity of CaCO<sub>3</sub>, thus obtaining CaCO<sub>3</sub> powders with refined grains and high dispersibility. Under the optimized process, by controlling the pre-sanding time of Ca(OH)<sub>2</sub> to 20 min and the Ca(OH)<sub>2</sub> concentration to 1.5 mol/L, pure calcite-phase CaCO<sub>3</sub> powder was achieved. The SEM average particle size was 60 ± 10 nm, the particle size distribution D<sub>50</sub> 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 CaCO<sub>3</sub> powder is monodisperse. This study provides a simple and effective method for the large-scale preparation of monodisperse nano-CaCO<sub>3</sub> powders using industrial carbonization.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"27 4","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Nanoparticle Research","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11051-025-06279-1","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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.
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