| abstract |
The invention discloses a microwave rapid preparation method of a bismuth oxybromide/titanium dioxide composite catalyst, belonging to the technical field of visible light catalyst preparation; the method comprises the following steps: adding bismuth nitrate pentahydrate into a mixed solvent consisting of acetic acid and water, putting the mixed solvent on a magnetic stirrer, stirring the mixed solvent until the mixed solvent is completely dissolved, adding titanium dioxide, and stirring the mixture uniformly to obtain a suspension; dropwise adding a potassium bromide solution into the suspension to obtain a mixed solution; and then putting the mixed solution into a microwave reactor, setting the temperature and time for reaction, cooling to room temperature after complete reaction, carrying out centrifugal separation on a reaction product, washing and drying to obtain the bismuth oxybromide/titanium dioxide composite catalyst. The method shortens the preparation time of the composite catalyst, improves the visible light photocatalytic activity of the single catalyst titanium dioxide and bismuth oxybromide, and has good catalytic effect. |