1.2 mol of 1, 2, 4-Triazole (Kanto Chemicals Co. Ltd., 98.0 %) was dissolved in 2 mol of piperidine (Kanto Chemicals Co. Ltd., 98.0 %). 0.4 mol of titanium tetraisopropoxide (Kanto Chemicals Co. Ltd., 97.0 %) and 0.4 mol of 1-amino-2-propanol (Kanto Chemicals Co. Ltd., 99.0 %) were mixed directly in a four necked round bottom flask equipped with thermometer, condenser and drying tube. 0.4 mol of Urea (Kanto Chemicals Co. Ltd., 99.0 %) was dissolved in 2 mol of N, N-Dimethylformamide (DMF, Kanto Chemicals Co. Ltd., 99.5 %). The solution was poured into the flask. Then, the mixture was heated by oil bath at 85 °C for 2 h. The solution was evaporated, so that corresponding TiOxNy precursor content became about 8 %.