简要介绍了二氧化钛纳米材料的合成、性质、改性及其在能源方面的应用.其中合成方法包括溶胶凝胶、水/溶剂热、氧化、沉积和超声/微波助合成法;性质包括结构和热力学以及电学和光学性质;改性包括掺杂和敏化;应用包括光催化、光伏打和光解水. The synthesis, properties and modification of titania nanomaterials and their applications in energy are briefly introduced. The synthetic methods include sol-gel, water / solvothermal, oxidation, deposition and ultrasonic / microwave assisted synthesis methods. Properties include structure and thermodynamics As well as electrical and optical properties; modification includes doping and sensitization; applications include photocatalysis, photovoltaic and photolysis.