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Synthesis of Nanocrystalline Cobalt Selenide in Nonaqueous Solvent

✍ Scribed by J.H. Zhan; X.G. Yang; S.D. Li; Y. Xie; W.C. Yu; Y. Qian

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
96 KB
Volume
152
Category
Article
ISSN
0022-4596

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✦ Synopsis

Cobalt selenide nanocrystals have been synthesized by a solvothermal reaction between metallic cobalt and selenium at 1403C. The products obtained have been characterized by X-ray powder di4raction (XRD) and transmission electron microscopy (TEM). According to the XRD analysis, the as-produced cobalt selenide adopted a NiAs structure analogous to that of Ni 0.85 As. Therefore, it was termed Co 0.85 Se. Elemental analysis showed a cation-de5cient composition of about Co 0.844 Se. TEM observation indicated that the obtained Co 0.85 Se nanocrystals were of foliate morphology. IR analysis suggested that the product was free from contaminants such as ethylenediamine. The in6uence of various solvents on this synthetic process has been discussed. Ni 0.85 As has also been synthesized with a similar synthetic process.

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