摘要
Butterfly-like calcium carbonate（CaCO3） particles were successfully prepared via a facile precipitation reaction of Na2CO3 with CaCI2 in the presence of sodium polyacrylate（PAAS）. The as-prepared samples were cha- racterized with field emission scanning electron microscopy（FESEM）, X-ray diffraction（XRD） and Fourier transform infrared spectroscopy（FTIR）. Butterfly-like CaCO3 particles composed of three segment rods were obtained. Rod aggregates would act as the template for butterfly-like CaCO3 crystals consisted of regular shaped crystallites with 150--200 nm in diameter. The influences of reaction temperature, the amount of PAAS and reaction time on the nucleation and growth of CaCO3 crystals were investigated. The possible growth mechanism of CaCO3 crystals was discussed. This research can not onty make us further understand the general principles of the reaction, but also open up a new avenue of industrial production of CaCO3 particles with exquisite and unique morphologies.
Butterfly-like calcium carbonate（CaCO3） particles were successfully prepared via a facile precipitation reaction of Na2CO3 with CaCI2 in the presence of sodium polyacrylate（PAAS）. The as-prepared samples were cha- racterized with field emission scanning electron microscopy（FESEM）, X-ray diffraction（XRD） and Fourier transform infrared spectroscopy（FTIR）. Butterfly-like CaCO3 particles composed of three segment rods were obtained. Rod aggregates would act as the template for butterfly-like CaCO3 crystals consisted of regular shaped crystallites with 150--200 nm in diameter. The influences of reaction temperature, the amount of PAAS and reaction time on the nucleation and growth of CaCO3 crystals were investigated. The possible growth mechanism of CaCO3 crystals was discussed. This research can not onty make us further understand the general principles of the reaction, but also open up a new avenue of industrial production of CaCO3 particles with exquisite and unique morphologies.
基金
Supported by the National Natural Science Foundation of China（No.21077041）, ＂the Twelfth Five＂ Science Technology Research of Jilin Education Hall, China（No.2013[204]） and the Scientific Research Innovation Plan for Young Talented Person of Jilin Normal University, China（No.2011 [05]）.
