光催化剂TiO2由于价廉、性能高以及安全性，在大气/水污染净化治理等环保领域的应用越来越广，愈发受到重视。从Kasuga等报道了关于水热法合成钛酸纳米管以来，大比表面积和高孔体积的钛酸纳米管，由于具有独特的微结构而成为有前景的研究领域。然而钛酸纳米管结晶度很低，没有光催化活性。因此，利用钛酸纳米管为前驱体制备高光催化活性的TiO2成为近年光催化领域的挑战和热点。本文以制备高光催化活性TiO2为目的，以钛酸为前驱体，采用水热法合成F掺杂和La、F共掺杂2种体系光催化剂，光催化活性均优于P25。通过粉末X射线衍射、扫描电镜、红外光谱、光电子能谱、紫外-可见漫反射光谱以及光催化降解甲基橙溶液进行结构...Titanium dioxide (TiO2) has been attracting intense attention as photocatalyst because it has been proven to be the most suitable for widespread environmental applications, due to its cost effectiveness, high photocatalytic activities and nontoxicity. Titanate nanotubes with large specific surface area and pore volume have appeared to be a promising prospect due to their fascinating microstructure...学位：工学硕士院系专业：材料学院材料科学与工程系_材料学学号：2072008115060
