Recycling method of tungsten-molybdenum waste and photocatalytic application of product bismuth tungstate molybdate and compound of tungsten-molybdenum waste

The invention provides a tungsten-molybdenum waste recycling method and photocatalytic application of a product bismuth tungsten molybdate and a compound of the tungsten-molybdenum waste. The tungsten-molybdenum waste recycling method comprises the steps that the tungsten-molybdenum waste is leached through a leaching agent to obtain a leaching solution containing tungsten and molybdenum elements, then the leaching solution is mixed with a bismuth nitrate solution, a hydrothermal reaction is conducted, and the bismuth tungsten molybdate is prepared. According to the method, the tungsten and molybdenum waste materials are directly leached through the leaching agent, the mixed solution containing tungsten and molybdenum elements is obtained, the tungsten and molybdenum elements do not need to be separated, and then the tungsten and molybdenum acid salt products are directly prepared through the hydrothermal method. The method has the advantages of being simple, convenient, feasible, green, environmentally frien