相关实验视频
Updated: Jun 22, 2026

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Calcium Carbonate Formation in the Presence of Biopolymeric Additives
Published on: May 14, 2019
无溶剂的流体基于碳酸的rhombohedral纳米粒子的无溶剂流体
1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China.
Journal of the American Chemical Society
|June 19, 2009
概括
研究人员开发了新的,无溶剂的碳酸纳米颗粒液体. 这些功能化纳米结构提供了改进的可处理性和内在导电性,克服了关键的应用障碍.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 体科学 体科学 体科学
背景情况:
- 碳酸纳米颗粒具有成本效益,但容易聚集,缺乏固有的功能.
- 这些局限性阻碍了它们在各种工业和科学领域的更广泛应用.
研究的目的:
- 使用功能化碳酸纳米颗粒制备和描述新的无溶剂液体.
- 展示这些纳米结构的潜力,以提高可处理性和新的功能.
主要方法:
- 带有软的有机外的方形碳酸纳米颗粒的合成.
- 使用高分辨率传输电子显微镜 (HR-TEM) 进行表征,以确认核心/外结构.
- 评估流体特性和电导率.
主要成果:
- 首次成功制备基于无机盐纳米粒子的无溶剂液体.
- 证明软的有机外赋予流动性,改善可加工性,操纵性和分散性.
- 揭示了这些功能化碳酸纳米颗粒的内在电导率,这是一个新奇的属性.
结论:
- 开发的核心/外碳酸纳米结构克服了聚合问题.
- 无溶剂流体在处理和应用方面提供了显著的优势,因为流动性得到了提高.
- 本质导电性为功能材料中的碳酸纳米颗粒开辟了新的途径.
相关概念视频
Factors Affecting Solubility
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A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

