Summary：
Hefei Xiangzheng chemistry technology limited production of nano photocatalyst xz-g02 has good photocatalytic performance. The nano photocatalyst can use light wavelengths of light energy to produce light catalytic effect, attached to the oxygen and water molecules in the surface of the material in the excitation generated with super activity OH- and O2 free radical ion. These free radicals, which have strong oxidizing properties, can almost break down all organic and inorganic substances which are harmful to the human body and environment. Finally, they can be decomposed into carbon dioxide and water by organic matters, bacteria and so on. Therefore, the nano photocatalyst xz-g02 can play antibacterial deodorization, disinfection, air purification and self-cleaning effect.
Determination of effective components in nano xz-gt02 photocatalyst
With FT-IR, XRD, UV Vis absorption spectra, TEM and other means of testing and characterization of nano photocatalyst. The nano photocatalyst with nanometer size and good photocatalytic effect.
Determination of photocatalytic degradation rate of formaldehyde xz-gt02
The photocatalytic properties of nano photocatalyst has been confirmed by many researches and applications of 10G nano photocatalyst coating on the glass plate 4 500mm * 500mm, naturally dried in storage is 600mm * 600mm * 600mm climate box. Adjust the temperature in the climate chamber, keep it in (23 + 2), adjust the humidity in the cabin, keep it in (50 + 5)%, and its light source is 40W fluorescent lamp. Gasification instrument box to quantitative formaldehyde climate through the injector into the gas, then every 1H extraction environmental chamber in the detection of formaldehyde content in which the method of the main parameters of GB/T15516 - 1995 "air quality - Determination of formaldehyde Acetylacetone Spectrophotometric Method" * *. Formaldehyde gas by water absorption, in pH=6 acetic acid ammonium acetate buffer solution, and c * * acetyl ketones, in boiling water bath conditions, quickly produce yellow compound stability, determination of the absorbance at the wavelength of 413nm, and then by drawing the standard curve to calculate the corresponding value of the formaldehyde concentration. The degradation rate of formaldehyde was calculated for the glass plate which was not coated with the sol. The results showed that the formaldehyde degradation rate was 93% in 8h.
Determination of xz-gt02 photocatalyst antibacterial rate (experimental bacteria with Staphylococcus aureus and Escherichia coli)
According to the Ministry of health in People's Republic of China 2002 "disinfection technical specifications", namely glass in 5cm * 5cm coated 0.15mL nano photocatalyst for its natural drying after 0.1mL bacteria liquid coating on the role of 24h after washing bacteria culture colony counting. The control group for the sample without photocatalyst sol suspension, test group and control group samples diluted by pouring method living bacterial count and calculate the killing rate of bacteria by experiment, Staphylococcus aureus and Escherichia coli. The results showed that under visible light, the sterilization rate reached 99%.
Application of xz-gt02 photocatalyst:
Wooden furniture, white goods, building wall, glass and other surfaces, without high temperature treatment, you can have a good photocatalytic performance.
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