Preparation method of MgTi2O5 nano catalyst

The invention discloses a preparation method of an MgTi2O5 nano catalyst, and relates to the preparation method of the nano catalyst. The preparation method aims to solve the technical problem that pure-phase MgTi2O5 nanocrystals are difficultly prepared by a conventional method. The method comprises the steps: firstly, adding magnesium acetate and tetrabutyl titanate into an ethylene glycol solution, and stirring; secondly, washing, and drying; and thirdly, roasting. The method can prepare pure-phase MgTi2O5, moreover, the average particle size of MgTi2O5 is less than 100 nm, and MgTi2O5 is a nano photocatalyst having quite high catalytic efficiency. The method is used for preparing the MgTi2O5 nano catalyst.