期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 562, 期 -, 页码 33-37出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.02.031
关键词
Nanostructured materials; Precipitation; X-ray diffraction; Transmission electron microscopy
资金
- National Natural Science Foundation of China [20971107]
In this work, alpha-Co(OH)(2) and beta-Co(OH)(2) nanosheets were selectively synthesized through an epoxide precipitation reaction under mediation of fluoride ions. The protonation and ring opening reaction of propylene oxide promoted the hydrolysis [Co(H2O)(6)](2+) to form a mixed phase of alpha-Co(OH)(2) and Co-2(OH)(3)Cl in the condition of no existence of fluoride ions. Due to the enhanced hydrolysis of [Co(H2O)(6)](2+) under function of fluoride ions, pure phases of alpha-Co(OH)(2) and beta-Co(OH)(2) were formed respectively at different concentration of fluoride ions. The mild reaction condition of this route allows for large scale synthesis of cobalt hydroxide nanosheets, which is only limited by volume of the vessel used as reactor. (C) 2013 Elsevier B.V. All rights reserved.
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