title: Nacre-like calcium carbonate controlled by ionic liquid/graphene oxide composite template.
abstract: 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 (FT-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.
authors.affiliation: School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230039, PR China; School of Chemistry and Chemical Engineering, Hefei Normal University, Hefei, Anhui 230601, PR China.
authors.forename: Chengli
authors.initials: C
authors.lastname: Yao
authors.affiliation: School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230039, PR China. Electronic address: anjx@163.com.
authors.forename: Anjian
authors.initials: A
authors.lastname: Xie
authors.affiliation: School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230039, PR China.
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Shen
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei Normal University, Hefei, Anhui 230601, PR China.
authors.forename: Jinmiao
authors.initials: J
authors.lastname: Zhu
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei Normal University, Hefei, Anhui 230601, PR China.
authors.forename: Hongying
authors.initials: H
authors.lastname: Li
mesh_terms: D040761:Biomimetic Materials / Q000138:chemical synthesis*; D002119:Calcium Carbonate / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D006108:Graphite / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D008422:Materials Testing; D054802:Molecular Imprinting / Q000379:methods; D060734:Nacre / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry; D013499:Surface Properties
chemical_list: D052578:Ionic Liquids; D060734:Nacre; D010087:Oxides; D006108:Graphite; D002119:Calcium Carbonate
keywords: Calcium carbonate; Graphene oxide; Ionic liquid; Morphology; Polymorphism