I. Photocatalytic reaction trigger mechanism
When the surface of the titanium cup is exposed to light (especially ultraviolet) irradiation, its titanium oxide coating will release positive holes and negative electrons. This process is generated through the light excitation of high-energy particles and water molecules and dissolved oxygen reaction, the formation of active free radicals and active oxygen.
Second, the generation of active oxygen and sterilization mechanism
1, bactericidal effect: the release of active oxygen can destroy the bacterial cell membrane structure, oxidize the bacteria within the protein and DNA, thereby inhibiting bacterial proliferation or even direct inactivation;
2, organic decomposition: active oxygen can also decompose organic pollutants in the water, reduce odor and delay the corruption of drinks.
Third, the continuous protection of titanium oxide film
The dense titanium oxide film naturally formed on the surface of the titanium cup not only provides a physical barrier, but also its photocatalytic properties can continue to release active substances under the light conditions to achieve long-lasting bacterial inhibition.
Experimental verification
Bacteria inhibition rate test: titanium cup in the simulation of sunlight conditions on the E. coli bacteria inhibition rate of up to 99.3% in 24 hours, while in the absence of light inhibition rate of 85% to 90%;
Freshness effect: titanium cups filled with fruit and vegetable juices in the light environment, the corruption time is more than 2 times longer than ordinary cups.
Summary: the bactericidal properties of titanium cups through the photocatalytic reaction to achieve both high efficiency and environmental protection, but the actual effect by the light conditions have a greater impact.