Crystallization control of SrCO{sub 3} nanostructure in imidazolium-based temperature ionic liquids
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004 (China)
- National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190 (China)
Highlights: ► Nanowhisker, nanospindle, nanosphere, sphere, spindle, rodlike SrCO{sub 3} were obtained. ► Nanowhisker, nanospindle SrCO{sub 3} were auto-assembled in [C{sub 8}mim]BF{sub 4} and [HOEtMIm]NT{sub f2}. ► Small size and rough surface particle show low starting decomposition temperature. ► This method is simple, easy to control in large-scale producing SrCO{sub 3} nanostructure. -- Abstract: Strontium carbonate nanostructures, with unique nanowhisker, nanospindle, nanosphere, sphere, spindle, and rodlike hierarchical structure, were synthesized in imidazolium-based room temperature ionic liquids [C{sub 4}mim]PF{sub 6}, [C{sub 4}mim]Cl, [C{sub 8}mim]Br, [C{sub 8}mim]BF{sub 4}, and [HOEtMIm]NT{sub f2}. The nanostructures were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis. The results show that the morphologies of SrCO{sub 3} were strongly dependent on the nature of the corresponding RILs, its content, and the reaction temperature. RILs can act as structure-directing agent, leading the auto-assembly of SrCO{sub 3} crystal. [C{sub 8}mim]BF{sub 4} and [HOEtMIm]NT{sub f2} favored the production of nanowhisker and nanospindle SrCO{sub 3}, respectively, whereas [C{sub 4}mim]PF{sub 6} favored the production of nanosphere. Small particles were obtained at high reaction temperature. Low starting decomposition temperature was observed. Finally, the formation mechanism of the SrCO{sub 3} crystal was preliminary presented.
- OSTI ID:
- 22215542
- Journal Information:
- Materials Research Bulletin, Vol. 47, Issue 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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