铁离子掺杂高岭石基纳米TiO2光催化材料制备及应用研究

Preparation and application research of photocatalytic material of Fe^3＋ doping nanometer TiO2/kaolinite

选择非金属矿物高岭石作为载体，制备TiO2复合光催化材料，并采用Fe^3＋化合掺杂制备铁掺杂高岭石基纳米TiO2光催化材料。并用其光催化降解含偶氮染料云母珠光颜料工业废水，应用结果表明：Fe^3＋化合掺杂提高了材料的光催化活性且在自然光下的催化效果也有很大的提高．该研究对矿物负载型光催化材料在自然光下降解有机物，抗菌、净化空气的工业应用具有重要意义。

The nonmetallic mineral kaolinite was chosen as a substrate to prepare titanium dioxide （TiO2） photocatalyst, then changed its characteristics and modified its surface by Fe^3＋ doping. Study on application and its mechanism of photocatalyitc degradation of the AZO-dye wastewater from mica-pearl pigment industry was degraded by this kind of nanocomposite material and photocatalysis experimental results show that Fe^3＋ doping improved material photocatalysis activity both in UV-light and sunlight. This research has particularly important signification for the development and application of composite photocatalyst materials to degrade the organic matter, disinfect and purify air in sunlight.