Papers by Author: Sheng Min Sun

Abstract: To prepare copper oxide crystals by direct precipitation with copper sulphate as the copper, sodium hydroxide as the precipitant,and ethanol - aqueous solution as dispersion system. Ultimately getting the optimum conditions of synthesis of the copper oxide by aging time, calcination temperature, pH values as three factors,and methylene blue degradation as the reference: the aging time was 30 min, the calcination temperature was 400 ° C, and pH value was 9. And using XRD, SEM for characterization testing of the product.

Abstract: In pure titanium body, through the method of micro-arc oxidation (MAO) on the surface of porous titanium dioxide film and study on factors of methyl orange in the light influence of catalytic degradation process, the results show that: with uv light for the source, pH value of 5, micro-arc oxidation voltage is 400 V, the catalytic activity of porous titanium dioxide film was the highest.

Abstract: The composite materials were prepared with high-viscosity clay as carrier, activated carbon as adsorbent, and titanium dioxide as photocatalyst.Kinetic process of photocatalytic degradation of rhodamine B was investigated at different reaction conditions using the composite materials.The results shown that : rhodamine B was the maximum catalytic activity when the initial reaction solution concentration is 5mg/L,pH=6,and composite material dosing quantity is 5g/L.The kinetics of photocatalytic degradation reaction can be expressed by the first-order reaction kinetic model.

Abstract: The composite materials was made using high-viscosity clay as carrier, activated carbon as adsorbent, and titanium dioxide as photocatalyst .The effect of its photocatalytic degradation activity of Rhodamine B was studied. The results showed that the catalytic activity got the maximun at pH of the reaction solution 10, the composite dosage of 5g, calcination temperature of 550°C, activated carbon: titanium dioxide as 0.75:1.

Abstract: Prepared porous titanium dioxide film on the titanium matrix by micro-arc oxidation(MAO) method. Using SEM, XPS, XRD, Raman and other testing methods, the titanium dioxide film was characterized. In the ultraviolet radiation, the effect of MAO titanium dioxide film on the degradation rate of Rhodamine B solution was measured, after 180 minutes, 90% Rhodamine B solution was degraded.

Abstract: Nitrogen doped TiO2 Photocatalysts was prepared by ultrasonic dispersion method based on the predominated materials as tetrabutyl titanate with the dopant of saturated Urea solution. The dynamic behavior of nitrogen doped TiO2 for the degradation of rhodamine B was researched on the catalyst volume and the effects of pH value on photocatalysis ratio. Results showed that the catalytic reaction was accord with the first class reaction dynamic model. When the catalyst was 0.1g and the pH value close to 7, the degradation ratio was the maximum.