Method for preparing oxygen-vacancy-containing strontium titanate photocatalyst

A method for preparing an oxygen-vacancy-containing strontium titanate photocatalyst is characterized in that an elemental metal is loaded on the surface of strontium titanate to obtain elemental metal/strontium titanate, and then, under the atmosphere of a reducing gas or inert gas, low-temperature calcination is performed to obtain elemental metal/ErTiO(3-x). The loaded elemental metal can not only serve as a co-catalyst but also greatly lower the temperature required for generation of an oxygen vacancy. For example, Pt/SrTiO3 can obtain the oxygen vacancy at 150 DEG C under a H2/N2 mixed gas, the reaction condition is mild, and the energy consumption is low. The prepared oxygen-vacancy-containing strontium titanate photocatalyst is remarkably improved in hydrogen production performance. 种含氧空位钛酸锶光催化剂的制备方法，将单质金属负载在钛酸锶的表面得到单质金属/钛酸锶，然后，在还原性气体或惰性气体气氛下，低温煅烧得到单质金属/SrTiO。本发明中负载的单质金属除了作为助催化剂之外，还能大幅度降低生成氧空位所需温度。如Pt/SrTiO在H/N混合气下150℃即可得到氧空位，反应条件温和、能耗低。制备的含氧空位光催化剂的制氢性能显著提高。