Theory of size-selective precipitation
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- 作者：S. A. Tovstun ; V. F. Razumov
- 关键词：Size ; selective precipitation ; Derjaguin approximation ; Size distribution ; Free energy ; Random packing ; Particle separation process
- 刊名：Journal of Nanoparticle Research
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：19
- 期：1
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Nanotechnology; Inorganic Chemistry; Characterization and Evaluation of Materials; Physical Chemistry; Optics, Lasers, Photonics, Optical Devices;
- 出版者：Springer Netherlands
- ISSN：1572-896X
- 卷排序：19
文摘
A theory of size-selective precipitation of spherical nanoparticles is presented. The precipitate is assumed to be a random loose packing of spheres with low polydispersity (less than ≈30%). The interparticle interaction is treated in the Derjaguin approximation. The theory is used to calculate the polydispersity in the fractionated particle samples for various problem parameters. Our calculations show that, for typical particle concentrations, fractionation is effective for polydispersities above 20% and ineffective for polydispersities below 5%.