Photocatalyst spray and preparation method thereof

The invention discloses a photocatalyst spray and a preparation method thereof. The preparation method of the photocatalyst spray comprises settling a mixed solution of titanyl sulfate and tetraethoxysilane under the action of ammonium hydroxide and ethylene glycol ethyl ether, and then performing filtering, washing and calcination to obtain a powder; uniformly dispersing the powder into a dispersing liquid and adding in film-forming agent to obtain a precursor solution; filling the precursor solution into a spray tank, filling propellant into the spray tank through a one-step pressurized filling method, and then sealing up the spray tank to obtain the photocatalyst spray. The preparation method of the photocatalyst spray is simple in process and short in reaction time; produced nanospheres are uniform in composition, specifically, titanium dioxide is uniformly distributed inside silicon dioxide nanospheres, which can decompose and absorb hazardous substance under illumination, so thatthe utilization rate of