Synthesis of TiO2 with Microspheres Morphology via Solvothermal Method

• Main Author: Ali Akbar, Muhamad
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/38052
• Institution: Institut Teknologi Bandung

TiO2 has been recognized as one of the promising semiconductor materials for photocatalytic, dye sensitized solar cells and sensing applications. Morphology and size control of TiO2 nanostructures is important to achieve high photocatalytic activity. TiO2 with microspheres morphology have been one of most widely studied among various TiO2 nanostructures. TiO2 with microspheres morphology has reported because of its unique properties such as high surface area, high pore volume, high thermal stability and good optoelectronic properties. In this research, TiO2 with microspheres morphology have been synthesized via solvothermal method implementing surfactant as structure directing agent. TiO2 with microspheres morphology were successfully synthesized using surfactant/Ti molar ratio of 1.34 and H2O/Ti molar ratio of 169.5. The effect reaction time on the mophological evolution of TiO2 with microsphers morphology was observed for two types of surfactant, i.e. cetyltrimethylammonium bromide (CTAB) and benzalkonium chloride (BZK). It is clearly observed that type of surfactant plays a vital role for determining the morphology of TiO2. Here, the morphology of TiO2 was studied by scanning electron microscopy, while their phase distributions were studied using both Raman spectroscopy and X-ray powder diffraction analyses. The presence of anatase anad rutile mixed phase was revealed. Finally, synthesized TiO2 with microspheres morphology behave as mesoporous solids from its adsorption isotherm.