| Hydrothermal Synthesis of monoclinic - cubic Li2TiO3 hybrid nanocomposite microspheres |
| Paper ID : 1579-UFGNSM-FULL |
| Authors: |
|
Ahmad Reza Abbasian *1, Mohammad Reza Rahimipour2, Zohreh Hamnabard3 1Iran- Zahedan - university BLV. Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, 2Department of Ceramics, Materials and Energy Research Center, PO Box 31787-316, Karaj 3Lasers and Optics Research School, Nuclear Science and Technology Research Institute, PO Box 11365-8486, Tehran, Iran |
| Abstract: |
| Li2TiO3 compound is one of the most promising tritium breeding candidate materials, using for fusion nuclear reactor. The use of hydrothermal method in preparing inorganic has become a recent trend. In this work, hybrid nanocomposite microspheres of the nanocrystallites Li2TiO3 with monoclinic and cubic crystal structures were synthesized at low temperature, 400°C for 12 hours under pressure 12MP by the batch supercritical hydrothermal method. The raw materials were used containing tetrabutyl titanate (Ti(C4H9O)4) as titanium source, lithium nitrate (LiNO3) as lithium source, citric acid (C6H8O7) as chelating agent and nitric acid (HNO3) as pH controller. The samples were characterized with scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and X-ray diffraction (XRD). The SEM micrographs showed the synthesized powders have microsphere shape and range size of microspheres is 1 to 3.5 micrometers. XRD result illustrate the microspheres are nano structure. According to XRD results and using known Scherrer equation, the crystallite size of monoclinic phase about 18 nm and monoclinic about 14 nm were determined. The TEM results show that two type of particles morphologies are present in the of synthesized microspheres. The first is spherical shape with particle size smaller than 100 nm and second is irregular shape with particle size between 100 to 200 nm. |
| Keywords: |
| Li2TiO3, Hydrothermal synthesis, Hybrid nanocomposite, Microspheres |
| Status : Paper Accepted (Poster Presentation) |
