【摘要】 采用溶胶-凝胶法在低温(60~80℃)下制备得到罗丹明B染料敏化的锐钛矿型TiO2粉体。利用X射线衍射、红外光谱、荧光光谱、紫外-可见光吸收光谱、漫反射光谱对光催化剂的晶相结构、吸收光谱特征进行了表征,结果表明:罗丹明B与TiO2发生了相互作用,罗丹明B敏化的TiO2在可见光区域的吸收增强。光催化氧化实验表明,经罗丹明B敏化的锐钛矿型TiO2粉体,在普通日光灯下对甲基橙具有良好的光催化活性。更多还原

【Abstract】 The rhodamine B dye-sensitized anatase TiO2 powders were prepared at low temperature(60 to 80℃) in this work.The properties of the photocatalysis were characterized by XRD,FT-IR,PL and UV-vis absorption spectra.The results indicate that there is a strong mutual action between rhodamine B and TiO2,and there is a stronger absorption in visible light range for the sample.The photocatalytic degradation results reveal that there is a high activity for photocatalytic degradation under the fluorecent light.更多还原