Study Of Antibactial Ceramics Made From Zn/Ce And Zn/Y Ions Mixed TiO₂and Its Antimicrobial Properties

Titanium dioxide is a relatively ideal semiconductor photocatalyst, which has a good application prospect in solar energy conversion and storage, titanium dioxide reduction, the degradation of harmful and complex organic matter etc. Previous researches suggest that the antibacterial effect of anti-bacterial ceramic product made of pure titanium dioxide is not ideal. This paper focuses on the finding of best technological parameters and the exploration of relevant antibacterial mechanism when TiO2(Zn/Ce-TiO2) and TiO2(Zn/Y-TiO2) are used as antibacterial agent in the production of antibacterial ceramics, which means Important guiding significance for the exploitation and application of titanium dioxide in the field of the production of photocatalytic antibacterial material.We use tetrabutyl titanate and absolute ethyl alcohol to make pure TiO2powder with the sol-gel method. We use ordinary ceramic chip which can be bought in markets as carrier. We smear the TiO2colloid on the surface of ceramic to make it anti-bacterial and anti-fungal. We use XRD, SEM, UV-VIS-DRS, TEM, BET to analyze the crystal structure of antibacterial material and its surface topography. We use Film indiscrete method to analyze the mold resistance of pure Nanometre TiO2anti-bacterial and anti-fungal ceramic product to the ATCC10231, ATCC25922and ATCC6538. The results suggest that under the arousal of visible light, anti-bacterial and anti-fungal ceramic product made of pure titanium dioxide has no antibacterial effect to ATCC10231, ATCC25922and ATCC6538.We use tetrabutyl titanate, absolute ethyl alcohol, zinc nitrate, cerous nitrate as raw material to make Zn/Ce-TiO2powder through sol-gel method. We use tetrabutyl titanate, absolute ethyl alcohol, zinc nitrate, yttrium nitrate as raw material to make Zn/Y-TiO2powder through sol-gel method. We use ordinary ceramic chip which can be bought in markets as carrier. We smear the Zn/Ce-TiO2and Zn/Y-TiO2colloid on the surface of ceramic to make it anti-bacterial and anti-fungal. We use XRD, SEM, UV-VIS-DRS, TEM, BET to analyze the crystal structure of antibacterial material and its surface topography. We use ATCC10231, ATCC25922, ATCC6538as experimental strains, explore the effect of the variation of doping ratio of the surfactant sodium dodecyl benzene sulfonic acid, calcination temperature, coating thickness meter, coating layer for the mold resistance of zinc cerium doped TiO2antibacterial ceramics and zinc yttrium doped TiO2antibacterial ceramics to determine the best process parameters. The results suggest that the input of sodium dodecyl benzene sulfonate should be0.25g. The thickness of the swab should be15nm. The smear layer should be two. The calcination temperature should be600℃. Under these circumstances, the ceramic has the strongest antibacterial property. The sterilizing rate can be100%. After three-day soak of hydrochloric acid and three-month soak of sodium hypochlorite, the antibacterial property of anti-bacterial and anti-fungal ceramic product is quite good with great acid and alkali resistance.