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Hydrazine-Assisted Low-Temperature Hydrothermal Preparation of Nanocrystalline Jaipurite

✍ Scribed by J.H. Zhan; Y. Xie; X.G. Yang; W.X. Zhang; Y.T. Qian

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
111 KB
Volume
146
Category
Article
ISSN
0022-4596

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✦ Synopsis

Nanocrystalline Jaipurite has been successfully prepared from amorphous cobalt sul5de in hydrazine solution at 1203C for 24 h using a hydrothermal process. The additive hydrazine is a critical factor for mineralization of amorphous CoS to Jaipurite. X-ray powder di4raction analysis indicated that the product was singlephase Jaipurite. Transmission electron microscopy images showed that as-formed Jaipurite particles were of laminar morphology. The composition of the product with the atomic ratio of 1.009 for Co/S is approximately stoichiometric, determined by chemical analysis. IR analysis suggested that the product was not contaminated in the hydrothermal process. 1999 Academic Press

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