[A study on preparation and characteristic of RuO2/TiO2 coupled photocatalyst].
RuO2/TiQ2 coupled photocatalyst was prepared by sol-gel-dipping method. Being a model reaction, the photocatalytic degradation of direct fast black G was investigated in RuO2/TiO2 powder suspension irradiated by UV-lamp. The results showed that the addition of RuO2 to TiO2 greatly enhanced its photocatalytic activity, and the optimum dipped content of RuO2 was 0.16%, the optimum value of the calcinations temperature and the addition of RuO2/TiO2 powder were 500 degrees C and 5.00 g x L(-1), respectively. The photocatalytic degradation of direct fast black G was experimentally demonstrated to follow the Langmuir-Hinshelwood kinetic model, and the adsorption constant (14.22 L x mmol(-1)) and the reaction rate constant [4.94 x 10(-3) mmol(L x min)(-1)] were determined, respectively.
Yao
Bing-hua
BH
Departrnent of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China.
Wang
Li-ming
LM
Yu
Xiao-jiao
XJ
Yang
Guo-nong
GN
Zhao
Gao-yang
GY
Zheng
Huai-li
HL
D002384:Catalysis / Q000528:radiation effects; D004396:Coloring Agents / Q000737:chemistry; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D017975:Ruthenium Compounds / Q000737:chemistry*; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
D004396:Coloring Agents; D017975:Ruthenium Compounds; C029017:ruthenium dioxide; C009495:titanium dioxide; D014025:Titanium