光敏剂修饰的铁掺杂TiO_2的制备及光催化性能

Preparation and Photocatalytic Property of Modified Photosensitization and Iron Doped TiO_2 Photocatalys

该研究制备甲基橙(MO)、苋菜红(AM)修饰掺杂铁的二氧化钛复合材料MO-Fe-TiO_2和AM-Fe-TiO_2.X射线粉末衍射结果表明光敏剂甲基橙和苋菜红修饰没有改变TiO_2的晶相,紫外-可见漫反射证明甲基橙、苋菜红修饰掺杂铁的二氧化钛复合材料波长吸收范围变宽.用高效液相色谱定量分析复合材料对氯虫苯甲酰胺的光催化后残留量,表明甲基橙、苋菜红修饰掺杂铁的二氧化钛复合材料对氯虫苯甲酰胺光催化效率明显高于掺杂铁的二氧化钛材料.

Iron doped titanium dioxide photocatalyst were modified by methyl orange（MO） and amaranth（AM）, which were composites MO-Fe-TiO2 and AM-Fe-TiO2 . These catalysts were analyzed by XRD and UV-Vis DRS. Experimental results showed that after modification, absorbency of catalyst was enhanced in visible region and the crystal phase was not changed. MO-Fe-TiO2 and AM-Fe-TiO2 present higher photocatalytic efficiency when being used for photocatalytic degradation of chlorantraniliprole.