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Synthesis and study of a well crystallized CaCO₃ vaterite showing a new habitus

Content Provider	Royal Society of Chemistry (RSC)
Author	Dupont, Loïc Figlarz, Michel Portemer, François
Copyright Year	1997
Abstract	Synthetic CaCO 3 vaterite obtained by classical routes consists of shapeless particles. However, owing to their small size (50 nm), the particles tend to agglomerate strongly, thus resulting in spherical packs of 3 µm average diameter. Transmission electron microscopy studies of isolated particles are therefore very difficult to achieve without submitting these aggregates to treatments that could affect their structural and textural features. We have synthesized pure vaterite particles which do not exhibit this agglomeration phenomenon but present a clearly defined habitus (size, shape, texture). It is therefore possible to prepare microcrystalline monolithic hexagonal platelets of vaterite in the micrometre range that exhibit very good crystallinity. In addition, we have carried out an IR study of this pure vaterite and an assignment of the different absorption bands is proposed, in comparison with the two other CaCO 3 modifications.
Starting Page	797
Ending Page	800
Page Count	4
File Format	PDF
ISSN	09599428
Volume Number	7
Issue Number	5
Journal	Journal of Materials Chemistry
DOI	10.1039/a607761g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	CaCO Vaterite Classical mechanics Flocculation Micrometre Transmission electron microscopy Morphology (biology)
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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