▎ 摘　　要

NOVELTY - Preparing photocatalytic air purification rod-shaped titanium dioxide particle composite fiber felt, comprises (i) taking titanium dioxide precursor solution, (ii) dispersing 6 mg/ml photocatalytic nanoparticles into 50 ml deionized water, sonicating for 30 minutes to obtain a dispersion, immersing the fiber mat in the dispersion, sonicating for 5 minutes, drying at 135 degrees C for 20 minutes, and repeating soaking and drying for 3 times, and (iii) placing the fiber mat into the titanium dioxide precursor solution, and placing it into a microwave rapid reaction synthesizer for annealing. USE - The method is useful for preparing photocatalytic air purification rod-shaped titanium dioxide particle composite fiber felt. ADVANTAGE - The composite fiber felt: uniformly supports and tightly coats the photocatalytic particles; increases the specific surface area of the original single ultrafine fiber; increases the contact area between the catalyst and bacteria and microorganisms and the number of active sites involved in the redox reaction; efficiently captures microbial particles in the air to achieve rapid photocatalytic response; and achieves photocatalytic antibacterial inactivation.