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Pioneering In Situ Recrystallization during Bead Milling: A Top-down Approach to Prepare Zeolite A Nanocrystals
Bibliographic Information
- Published
- 2016-07-05
- Resource Type
- journal article
- Rights Information
-
- https://creativecommons.org/licenses/by/4.0
- https://creativecommons.org/licenses/by/4.0
- DOI
-
- 10.1038/srep29210
- Publisher
- Springer Science and Business Media LLC
Description
<jats:title>Abstract</jats:title><jats:p>Top-down approach has been viewed as an efficient and straightforward method to prepare nanosized zeolites. Yet, the mechanical breaking of zeolite causes amorphization, which usually requires a post-milling recrystallization to obtain fully crystalline nanoparticles. Herein we present a facile methodology to prepare zeolite nanocrystals, where milling and recrystallization can be performed <jats:italic>in situ</jats:italic>. A milling apparatus specially designed to work under conditions of high alkalinity and temperature enables the <jats:italic>in situ</jats:italic> recrystallization during milling. Taking zeolite A as an example, we demonstrate its size reduction from ~3 μm to 66 nm in 30 min, which is quite faster than previous methods reported. Three functions, <jats:italic>viz</jats:italic>., miniaturization, amorphization and recrystallization were found to take effect concurrently during this one-pot process. The dynamic balance between these three functions was achieved by adjusting the milling period and temperature, which lead to the tuning of zeolite A particle size. Particle size and crystallinity of the zeolite A nanocrystals were confirmed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and water adsorption-desorption. This work presents a pioneering advancement in this field of nanosized zeolites and will facilitate the mass production as well as boost the wide applications of nanosized zeolites.</jats:p>
Journal
-
- Scientific Reports
-
Scientific Reports 6 (1), 2016-07-05
Springer Science and Business Media LLC
