Synthesis and Characterization of TiO2 Nanoparticles from Ilmenite Concentrate for Dye-Sensitized Solar Cells
                                                       Thet Wai Linn #1 , Myo Thuya Thein *2 , Myo Min Htun #3
# Faculty of Advanced Materials Engineering, University of Technology (Yatanarpon Cyber City, Pyin Oo Lwin, Myanmar
                                                                                              [email protected]
The important minerals of titanium are ilmenite and rutile. Ilmenite is a mixture of iron and titanium oxide. To produce electricity from solar energy more efficiently, research on the use of solar cells based on titanium dioxide nanoparticles are being investigated. The principle objective of this preliminary study is to be able to produce titanium dioxide nanoparticles for solar application from heavy sands of Myit Sone area in Moemeik Township. The sulfate route for the processing of Myit Sone ilmenite concentrate for the preparation of synthetic rutile is studied. The working concentrate is assaying 55.407 % TiO2 while the Fe2O3 assay 41.833 % respectively. After optimizing the factors, a product in which the TiO2 percent exceeds 94%. The obtained XRD pattern showed rutile and anatase in which the percentage of rutile is more than anatase at 900 °C. Its crystallite size is 34.32 nm. The SEM result of the synthetic rutile late showed some agglomeration of particles. The modified sol-gel method for the processing of synthetic rutile for the preparation of titanium dioxide nanoparticles was studied. The XRD pattern of TiO2 nanoparticles showed anatase and rutile in which the amount of anatase is more than rutileat 150 °C. The crystallite sizes of TiO2 nanoparticles are 6.8691 nm. The band gap of UV result for TiO2 nanoparticles showed 3.67 eV. The SEM result of the TiO2 nanoparticles later showed a little agglomeration of particles. The optimum efficiency of dye-sensitized solar cell based on TiO2 nanoparticles later has shown 456 mV.
Keywords− Ilmenite, Modified sol-gel method, Sulfate route, Titania nanoparticles and dye-sensitized solar cells