Photocatalytic treatment purification method for preventing automobile tail-gas pollution

The invention relates to the technical field of automobile tail-gas treatment, and discloses a photocatalytic treatment purification method for preventing automobile tail-gas pollution. The method adopts the following substances: butyl titanate, a green plant body, anhydrous ethanol, titanium dioxide, acetic acid, concentrated nitric acid, graphene, deionized water, a tackifying agent, an anti-volatile agent, a flame retardant, silver powder and reflective powder; the method adopts the following devices: an atomizing device, a constant-temperature mixing device, a spraying device and a holdingdevice; and the method is characterized in that the formula comprises the following raw materials, in percentages by weight: 18%-20% of the butyl titanate, and 30%-33% of the anhydrous ethanol. Whenthe method provided by the invention is implemented, a titanium dioxide sol uses a plant as a carrier, so that the titanium dioxide sol has a very large surface area, can effectively load a photocatalyst and maintain the photo