中文摘要：

采用溶剂热法制备了CaTi2O5微纳结构。用X射线衍射（XRD）、扫描电子显微镜（SEM）和比表面积分析仪（BET）对样品进行了表征,并用紫外-可见吸收光度计分析样品对光的吸收特性,研究不同钙源种类对CaTi2O5样品的物相、微观形貌及光催化性能的影响。结果表明：CaTi2O5样品更有利于降解甲基橙溶液。钙源为Ca Cl2所制备的CaTi2O5样品的结晶度高、颗粒大小均匀,具有低的反射率和高的吸收率,高的比表面积（112.34 m^2·g^-1）,因此样品呈现出较高的光催化性能。

英文摘要：

CaTi2O5 nano/microstructure were prepared by a solvothermal method.The structure of the samples were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and specific surface area analyzer（BET）.The absorption properties of the samples were analyzed by ultraviolet-visible absorption spectrophotometer.Effects of calcium source kinds on phase,microstructure and photocatalytic properties of CaTi2O5 samples were studied.The experimental results showed that the photocatalytic properties for degrading MO solutions of CaTi2O5 samples are superior to that of CaTi2O4（OH）2.CaTi2O5 loose micro/nanostructure built by nanoparticles prepared using CaCl2 had high crystallinity,low reflection rate and high absorption rate,and high specific surface area（112.34 m^2·g^- 1）,which reached the optimum photocatalytic rate.