Durable suspension space disinfectant and preparation method thereof

The invention relates to the technical field of disinfectants, and discloses a persistent suspension space disinfectant. The space disinfectant comprises the following raw materials in percentage by mass: 3-6% of hydrogen peroxide; 1-3% of fumed silica; 0.5-1% of a dispersant; and the balance of water. The fumed silica is selected from particles with the particle size of 1-10 [mu] m, and the volume ratio of particles with the particle size of 2-5 [mu] m is 50-70%. The gas-phase white carbon black is added into the hydrogen peroxide liquid, and the atomized hydrogen peroxide liquid has the characteristics of haze, so that hydrogen peroxide is attached to the gas-phase white carbon black and suspends in air for a long time, and the sterilization and disinfection effects are improved. The space disinfectant disclosed by the invention is simple to prepare, convenient to use, not easy to agglomerate and settle after being atomized, and good in space suspension durability, and is suitable for sterilization and disi