Email this article Characteristics of NanoSilica Produced from Hydrothermal Solutions
- Authors: Potapov V.V.1, Serdan A.A.2
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Affiliations:
- Scientific Research Geotechnological Center, Far Eastern Branch
- Faculty of Chemistry
- Issue: Vol 43, No 6 (2017)
- Pages: 585-592
- Section: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/216283
- DOI: https://doi.org/10.1134/S1087659617060116
- ID: 216283
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Abstract
SiO2 sols and nanopowders are produced from hydrothermal solutions using the following processes: polycondensation of orthosilicic acid, ultrafiltration membrane concentration, and cryochemical vacuum sublimation. The physical–chemical characteristics of SiO2 sols and nanopowders are determined: particle size distribution, specific surface area, viscosity, and impurity ions content. It is demonstrated that the size of SiO2 nanoparticles in sols and nanopowders could attain 5–100 nm. The possibility of applying the produced silica to strengthen the concrete is justified.
About the authors
V. V. Potapov
Scientific Research Geotechnological Center, Far Eastern Branch
Author for correspondence.
Email: vadim_p@inbox.ru
Russian Federation, Petropavlovsk-Kamchatsky, 683002
A. A. Serdan
Faculty of Chemistry
Email: vadim_p@inbox.ru
Russian Federation, Moscow, 119991
