[Structural properties of TiO2 thin film modified by carbon black].
TiO2 photocatalytic film(CB-TiO2) modified by doping carbon black was prepared, and the some structural properties, such as specific surface area, phase, crystal grain size and excitation wavelength were gave, through liquid nitrogen adsorption, X-ray diffraction(XRD) and diffuse reflection spectrum(DRS). The results indicated that adsorbability of CB-TiO2 was greatly improved, BET specific surface area of which enhanced 50%-80% than that of TiO2, baked under 300 degrees C-500 degrees C. And CB modification reduced the crystal grain size, so the temperature of phase transformation was decreased. Corresponding, the photocatalytic activity of CB-TiO2 also was greatly improved, the reaction rate of which was 1.5 times of that of TiO2.
Chen
Zhongying
Z
State Key Joint Lab of Environment Simulation and Pollution Control, Dept. of Environ. Sci. & Eng., Tsinghua Univ., Beijing 100084, China. chenzhy97@mails.tsinghua.edu.cn
Yu
Gang
G
Zhang
Pengyi
P
Jiang
Zhanpeng
Z
D002244:Carbon / Q000494:pharmacology*; D002384:Catalysis; D008027:Light; D010316:Particle Size; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
C009495:titanium dioxide; D002244:Carbon; D014025:Titanium