液—液界面反应制备纳米球状TiO_2及其光催化性能研究

Preparation of TiO_2 nanospheres by liquid-liquid Interfacial reaction and its photocatalytic degradation

采用液—液界面反应成功制备了纳米球状TiO_2。用X射线衍射分析仪、扫描电子显微镜和紫外可见光谱等手段对该产物进行了表征,并探究了该产物对亚甲基蓝的光催化降解效果。结果表明,使用液—液界面法制备的TiO_2纯度高,其颗粒形貌是规则的球形,颗粒大小均匀,直径约为150 nm。在125 W高压汞灯下照射1 h,亚甲基蓝的光催化降解率可达到98.08%。

TiO_2 nanospheres were successfully prepared by liquid-liquid interface reaction. The samples were characterized by X-ray diffraction( XRD),scanning electron microscopy( SEM) and UV-vis spectroscopy. Besides,the photocatalytic degradation of methylene blue was investigated. The results showed that the purity of TiO_2 prepared by liquid-liquid interface reaction is high. The particle morphology of the sample is regular spherical,and the particle size is regular,which the diameter is 150 nm approximately. The photocatalytic degradation rate of methylene blue was 98. 08% under high-pressure mercury lamp of 150 W for 1 h.