Nanometer titanium dioxide in the photocatalytic decomposition of bacteria to achieve antibacterial effect. As the electronic structure of nano-titanium dioxide is characterized by a tio2-filled valence band and an empty conduction band, in the water and air system, when the electronic energy reaches or exceeds the band gap energy under the irradiation of sunlight, especially ultraviolet light. Electronic can from valence band to the conduction band, at the same time the corresponding holes in the valence band, which generate electronic, holes, under the action of electric field, electrons and holes separation occurs, migrated to different locations on the surface of the particles, a series of reaction, adsorption of dissolved oxygen on the surface of the TiO2, capture electronic form O2, generation of superoxide anion free radicals react with most organic matter (oxide). At the same time, it can react with organic matter in bacteria to produce CO2 and H2O. The hole oxidizes OH and H2O adsorbed on the surface of TiO2 into ·OH. ·OH has strong oxidation ability, attacks unsaturated bonds of organic compounds or extracts H atoms to generate new free radicals, and activates chain reaction, ultimately resulting in bacterial decomposition.
Nanometer titanium dioxide antibacterial characteristics: to human safety, non-toxic, no irritation to the skin; Strong antibacterial ability, antibacterial range; No odor, strange taste, small odor; Washable, long storage life; Good thermal stability, high temperature does not change color, does not decompose, does not volatilize, does not deteriorate; With good instantaneity, nano titanium dioxide antibacterial agent only needs 1h to play the effect, while other silver antibacterial agent needs about 24h to play the effect. Nano titanium dioxide is an antibacterial agent that can maintain antibacterial effect permanently. With good safety, it is used as food additive and has no adverse effect on skin contact.
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high quality chemicals and Nano materials. The Nano titanium dioxide produced by our company has high purity, fine particle size. Lower, please contact us if necessary.
