Hydrothermal Synthesis of Quartz Nanocrystals

This paper describes for the first time a chemical method for the preparation for nanocrystalline quartz. Submicron quartz powders are initially produced in hydrothermal reactions where soluble silica precursors precipitate as pure crystalline silica. To yield nanocrystalline material these particle...

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Bibliographic Details
Published in:Nano letters 2003-05, Vol.3 (5), p.655-659
Main Authors: Bertone, Jane F, Cizeron, Joel, Wahi, Rajeev K, Bosworth, Joan K, Colvin, Vicki L
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from solutions
Materials science
Methods of crystal growth
physics of crystal growth
Nanoscale materials and structures: fabrication and characterization
Physics
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Summary:This paper describes for the first time a chemical method for the preparation for nanocrystalline quartz. Submicron quartz powders are initially produced in hydrothermal reactions where soluble silica precursors precipitate as pure crystalline silica. To yield nanocrystalline material these particles can be purified and size selected by dialysis, filtration, and centrifugation. Transmission electron microscopy and X-ray diffraction illustrate that the product is pure phase α-quartz, consisting of isolated (i.e., nonaggregated) nanocrystals. Depending on the size selection method, crystallites with average sizes of 10 to 100 nanometers can be recovered.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl025854r