等离子体与纳米二氧化钛光触媒协同对室内空气消毒效果研究

Purification and disinfection effect of indoor air by plasma coupling Ag/TiO_(2) nanophotocatalysis system

目的研究等离子体与纳米二氧化钛光触媒协同系统(空气净化消毒装置)对室内空气的净化和消毒效果。方法将空气净化消毒装置置于30 m^(3)密封试验仓,作用30、45和60 min后,采用空气微生物采样器采样,用微生物检测法对试验仓内空气的净化和消毒效果进行评价。结果经高压放电激发产生等离子体协同电极板上纳米二氧化钛光触媒系统,持续作用45 min,对30 m^(3)密闭试验舱内空气中白色葡萄球菌的杀灭率达到99.9%以上,作用60 min对舱内空气中自然菌消除率>90%,对舱内空气中H1N1甲型流感病毒消除率>99.9%。该系统对试验舱内空气中颗粒物达到万级空气洁净程度,且净化过程无臭氧泄露。结论该等离子体与二氧化钛光触媒系统具有消除室内空气中微生物和颗粒物的作用。

Objective To study the purification and disinfection effect of a plasma coupling Ag/TiO_(2) nanophotocatalysis system on the indoor air.Methods The air purification system was put in a 30 m^(3) closed chamber,after working for 30,45 and 60 min,air microbe sampler and microorganism were deteded to evaluate the air purification effect of nanophotocatalysis system.Results In 30 m^(3) enclosed cabin,plasma coupling Ag/TiO_(2) nanophotocatalyst system could inactivate >99.9% Staphylococcus albus in 45 min,and could inactivate >99% natural bacteria,>99.9% H1 N1 influenza A virus in 60 min.Indoor air achieved class 10 000 of air cleanliness without ozone pollution.Conclusion The plasma photocatalytic system constructed by plasma and Ag/TiO_(2) nanophotocatalyst exhibits an excellent performance in purification and disinfection for indoor air.