Solvothermal Preparation of CaTiO3 Prism and CaTi2O4(OH)2 Nanosheet by a Facile Surfactant-Free Method
Keywords:solvothermal preparation, surfactant-free, CaTiO3 prisms, CaTi2O4(OH)2 interlaminar structure
AbstractCalcium titanate (CaTiO3) with prism-like-shaped and CaTi2O4(OH)2 nanosheet-like morphology were synthesized by a simple solvothermal route without any surfactants. X–ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and Fourier transform infrared spectroscopy (FT-IR) were employed to investigate the microstructure of the samples. The experimental results showed that NaOH concentration played a key role for the formation of CaTiO3 prisms. With increasing NaOH concentrations, the obtained sample changed from CaTi2O5 aggregated particles to CaTi2O4(OH)2 nanosheets, and then to CaTiO3 prisms. When NaOH concentration was 7 M, CaTiO3 morphology is mainly composed of regular prisms. A rational mechanism was proposed to illustrate the morphology evolution of the samples synthesized at various NaOH concentrations. And the CaTi2O4(OH)2 interlaminar structure was illustrated.
CERAMICS AND GLASSES
The copyrights for articles in this journal are retained by the author(s), with first publication rights granted to the journal. By virtue of their appearance in this open-access journal, articles are free to use with proper attribution in educational and other non-commercial settings.