期刊
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 51, 期 -, 页码 274-278出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2015.02.009
关键词
Calcium carbonate; Ionic liquid; Graphene oxide; Polymorphism; Morphology
资金
- National Nature Science Foundation of China [91022032, 21171001, 21173001, 51372004, 21371003, 21101054]
- Lab for Clean Energy & Green Catalysis of Anhui University
- Anhui Provincial Education Department [2012SQRL167ZD, 2013SQRL067ZD]
- Hefei Normal University [2014cxy25]
Nacre-like calcium carbonate nanostructures have been mediated by an ionic liquid (IL)-graphene oxide (GO) composite template. The resultant crystals were characterized by scanning electron microscopy (SEM), Fourier transform infrared (Fr-IR) spectroscopy, and X-ray powder diffractometry (XRD). The results showed that either 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) or graphene oxide can act as a soft template for calcium carbonate formation with unusual morphologies. Based on the time-dependent morphology changes of calcium carbonate particles, it is concluded that nacre-like calcium carbonate nanostructures can be formed gradually utilizing [BMIM]BF4/GO composite template. During the process of calcium carbonate formation, [BMIM]BF4 acted not only as solvents but also as morphology templates for the fabrication of calcium carbonate materials with nacre-like morphology. Based on the observations, the possible mechanisms were also discussed. (C) 2015 Elsevier BM. All rights reserved.
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