Abstract：To improve the removal efficiency of nitrogen monoxide(NO) of vehicle-mounted purification reactor ， the plasma discharge was combined with TiO2 photocatalysis. The effects of experimental parameters of voltage, humidity and temperature on NO removal efficiency were investigated based on the method of single factor variable. The results show that when the voltage increases from 6 kV to 40 kV, the NO removal efficiency reaches 56.25% by the coordination effect of plasma and photocatalysis of TiO2. A higher relative humidity than 25% results in lower synergic purification efficiency of NO because the strong adsorption of water molecules leads to a reduced density of available electron holes to TiO2. When the experimental temperature ranges from 30 ℃ to 200 ℃, the maximum synergic purification efficiency of plasma and TiO2 can reach 80.00%. In the purification process, chemistry adsorption capacity of TiO2 depends on temperature, while the temperature has slight effect on electron impact and adsorption.
2015, Vol. 36 
