Preparation method of photocatalytic active iodine adulterated titanium dioxide nano-material
A technology of photocatalytic activity and titanium dioxide, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as the inability to reduce the bandgap width of TiO2 and the inability to use visible light, etc., to achieve improved Light quantum efficiency, the effect of simple preparation method
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] 15ml of iodic acid solution (0.5M / L) was reacted with 20ml of tetrabutyl titanate (mass percentage>98.0%) until a white precipitate was completely formed. The white precipitate was directly heated in an oven, treated at 120°C for 4 hours, evaporated to remove water and part of the alcohols produced in the reaction to obtain a solid dry product. Then grind the obtained dry solid to make the particles uniform and reduce soft agglomeration. Put it into a muffle furnace after grinding, and calcinate at 355° C. for 2 hours to obtain an iodine-doped titanium dioxide nano-catalyst material with high catalytic activity under visible light. In the catalytic activity test, the apparent rate constant of the kinetics of the first-order reaction of the catalyst material to catalyze the degradation of phenol is k=5.00×10-3min-1, which is the apparent rate constant of the kinetics of the first-order reaction of titanium dioxide powder (P25, Degussa) k = 4.9 times that of 1.04×10-3min-1...
Embodiment 2
[0029] 20ml of saturated iodic acid solution (0.5M / L) was reacted with 20ml of tetrabutyl titanate (mass percentage>98.0%) until white precipitate was completely formed. The white precipitate was directly heated in an oven, treated at 120°C for 4 hours, evaporated to remove water and part of the alcohols produced in the reaction to obtain a solid dry product. Then grind the obtained dry solid to make the particles uniform and reduce soft agglomeration. Put it into a muffle furnace after grinding, and calcinate at 195° C. for 2 hours to obtain an iodine-doped titanium dioxide nano-catalyst material with high catalytic activity under visible light. In the catalytic activity test, the apparent rate constant of the first-order reaction kinetics of the catalytic degradation of phenol by the catalyst is k=4.27×10 -3 min -1 , which is 4.1 times the apparent rate constant k=1.04×10-3min-1 of titanium dioxide powder (P25, Degussa) first-order reaction kinetics, which is attributed to...
Embodiment 3
[0031] 10ml of saturated iodic acid solution (0.5M / L) was reacted with 20ml of tetrabutyl titanate (mass percentage>98.0%) until a white precipitate was completely formed. The white precipitate was directly heated in an oven, treated at 120°C for 4 hours, evaporated to remove water and part of the alcohols produced in the reaction to obtain a solid dry product. Then grind the obtained dry solid to make the particles uniform and reduce soft agglomeration. Put it into a muffle furnace after grinding, and calcinate at 500° C. for 2 hours to obtain an iodine-doped titanium dioxide nano-catalyst material with high catalytic activity under visible light. In the catalytic activity test, the apparent rate constant of the first-order reaction kinetics of the catalytic degradation of phenol by the catalyst is k=4.83×10 -3 min -1 , which is 4.7 times the apparent rate constant k=1.04×10-3min-1 of titanium dioxide powder (P25, Degussa) first-order reaction kinetics, which is attributed ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More