Metastable MnS crystallites through solvothermal synthesis

Citation
J. Lu et al., Metastable MnS crystallites through solvothermal synthesis, CHEM MATER, 13(6), 2001, pp. 2169-2172
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
0897-4756 → ACNP
Volume
13
Issue
6
Year of publication
2001
Pages
2169 - 2172
Database
ISI
SICI code
0897-4756(200106)13:6<2169:MMCTSS>2.0.ZU;2-6
Abstract
Metastable (beta and gamma) and stable (alpha) MnS crystallites were synthe sized by solvothermal reaction in various solvents at 190-200 degreesC. In tetrahydrofuran and benzene, the metastable MnS crystallites can be obtaine d. In water, ammonia liquor, ethylenediamine, alpha -MnS, which is converte d from the metastable phase, would be obtained. The low solubility of MnS i s the crucial reason to stabilize the metastable phase with good yield. The metastable MnS crystallites were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The meta stable gamma -MnS crystallites with rodlike morphology were found, and a un ique "methane-like" four-branched rod cluster was characterized. The blue s hift of the absorption edge indicates the quantum size effect of metastable MnS nanocrystallites.