ABSTRACT
Objective To develop a new technique of air purification by plasma combined with photocatalysis. Methods Taken trichloroethylene as the air pollutant, the combined tests of the plasma unit and photocatalysis unit were conducted in different ways of combination (plasma and photocatalysis, photocatalysis and plasma) by adjusting the distance and setting some nets between them, then the purify efficiency was evaluated. Results The way of combination (plasma and photocatalysis) showed the best purify efficiency, when the distance was 32.5 cm, purify efficiency was more than 90%, steel net could increase purify efficiency by 6%, non-woven fabric by 9%. Conclusion The combined usage of plasma and photocatalysis, keeping a fit distance and setting a net of special material, may produce a considerable synergistic effect in air purification.