温湿效应下离子风臭氧排放及电极修饰后的特性

Ionic wind has great potential in air supply, cooling, etc., whereas its ozone emission is significantly affected by the ambient condition. At present, the mechanism and suppression characteristic of ozone emission under the influences of temperature and humidity are still unclear. In this study, an elementary needle-ring ionic wind generator was fabricated to experimentally clarify the variations of its ozone emission with temperature and humidity. The needle surface was decorated with graphene and carbon nanotubes respectively. The differences in ozone emission caused by the two decoration methods and the influence mechanisms by temperature and humidity were analyzed. The results indicate that emitter decoration can effectively reduce ozone emission in low-and medium-humidity environment, and the inhibitory effect of ozone gradually weakens with increasing humidity. In high-humidity environment, the emitter decoration fails to reduce ozone emission. Temperature changes the variation law between ozone emission and humidity, but does not affect the effectiveness of emitter decoration in reducing ozone emission in low-and medium-humidity environment. The graphene decoration of emitter is generally more effective than the carbon-nanotube decoration in reducing ozone emission.