Two-dimensional-layered titanium-dioxide nanometer photocatalytic material and preparing method

The invention relates to a two-dimensional-layered titanium-dioxide nanometer photocatalytic material, and meanwhile further provides a preparing method of the two-dimensional-layered titanium-dioxide nanometer photocatalytic material. The photocatalytic efficiency of prepared titanium dioxide is high, and the photocatalytic efficiency ranges from 79.4% to 93.1%. The preparing method is characterized in that a coprecipitation method is combined with a hydrothermal method; the experiment condition is mild and safe, the requirement for a device is low, and the reaction condition is easy to control; the obtained product is the two-dimensional-layered titanium-dioxide nanometer material, the layered structure and continuity are good, the defects caused by a small-size layer structure are greatly reduced, and the two-dimensional-layered titanium-dioxide nanometer material has the quite good promoting effect on electron transmission; a preparing reagent of the two-dimensional-layered titanium-dioxide photocatalytic material comprises titanous sulfate, sodium hydroxide and nitric acid. The reagent is easy to obtain, cost is low, the risk is low, pollution to the environment is quite small, secondary pollution can be avoided in the production process, and waste is easy to recycle.