Study On Nanopowder Modified Coating For Antibacterial And Organic Pollutants Degradation

This paper discussed preparation of nanometer MgO with sedimentation method. Nanometer TiO₂ and a nanometer MgO modified functionality coating was produced. The ability of the nanometer TiO₂ degenerated the poison gas benzene of air was researched with the gas chromatography analytic method. We had done the research to the antibacterial properties of the nanometer TiO₂ and the nanometer MgO with bactcriostasis circle test.Did the main work as follows: 1) The MgCl₂ and Na₂CO₃ is the raw material, used the sedimentation method, control the PH value of the reaction, the reactant density, the reaction temperature, and had choose the suitable reaction time and the calcining temperature to prepare the nanometer MgO powder, with the transmission electronic microscope(TEM), the X-ray diffraction analysis(XRD), the Thermogravimetry (TG) to test the sample microscopic performance. 2) Nanometer modified functionality coating product were prepared through the affects together in several dispersible methods. 3) The nanometer TiO₂ modified functionality coating spread in a seal vessel, the benzene was the processing object, the influence of nanometer TiO₂ degeneration ability was inspected. 4) Through bactcriostasis circle test, the coating bacteriostasis performance was studied in the nanometer powder with different content, and inspected the illumination to the influence of the coating bacteriostasis performance.The experiment indicated that the size of the obtained nanometer MgO particle in optimal condition is small and distributed even, the cost of the sedimentation method is inexpensive and the operation is simple. On the condition of illumination, the TiO₂ modified functionality coating has a good photochemical catalysis performance, and the coating contains the one percent nanometer TiO₂ has a strong ability to degenerate the poison gas benzene of air. The nanometer MgO and the nanometer TiO₂ modified functionality coating have the certain antibacterial properties, and the antibacterial properties of the nanometer MgO surpassed that of the nanometer TiO₂. The coating of nanometer MgO content is 1%, which has the strong antibacterial properties. The coating of nanometer TiO₂ content is 2%, which has the ability to kill the E.coli under illumination.