The invention discloses a method for directly synthesizing
titanium dioxide nanoparticles on a fabric
fiber in situ, belongs to the technical field of application of
titanium dioxide nanoparticles, and aims to solve the problems that TiO2 is liable to agglomeration, liable to lose, hard to recycle and low in sunshine
utilization rate in
photocatalysis. The method comprises the following steps: firstly, preparing a butyl
titanate solution from absolute ethyl
alcohol and butyl
titanate, and soaking a pure cotton fabric into the butyl
titanate solution for 24 hours; hydrolyzing for 0.5 hour, further transferring into a
polytetrafluoroethylene high-pressure kettle, and carrying out
hydrothermal treatment for 8 hours at 120-150 DEG C; finally respectively calcining for 1 hour in a
muffle furnace at 200-400 DEG C, so as to obtain a TiO2
nanoparticle supported fabric. By adopting the method, nano TiO2 can be conveniently recycled and reused, the problems that conventional TiO2
powder is liable to agglomeration and liable to lose and thus low in
photocatalysis activity can be avoided, and organic pollutants in
sewage can be effectively degraded.