光催化技术防治花卉炭疽病菌害的研究  

Study on the Control of the Flower Bacteria Anthrax with Photocatalytic Technology

作　　者：王和才[1] 朱永法[2] 张立武[2] 

机构地区：[1]苏州农业职业技术学院,江苏苏州215008 [2]清华大学分析中心,北京100084

出　　处：《安徽农业科学》2008年第35期15574-15575,共2页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金资助项目(20433010);苏州农业职业技术学院自然科学基金资助项目(200513)

摘　　要：[目的]寻找新的广谱性、环保型花卉炭疽病防治方法。[方法]研究实验室模拟太阳光下纳米TiO2光催化剂对花卉炭疽病菌的杀灭效果,探讨催化剂浓度、使用量、光照时间和光照强度对杀菌效果的影响。[结果]当纳米TiO2光催化剂浓度为1.0%时,其杀菌效果达到92.0%;当纳米TiO2光催化剂用量为1.25 ml时,其杀菌效果最好,达87.3%;随光照时间的延长或光照强度的增强,纳米TiO2光催化剂的杀菌效率提高。在催化剂浓度为1.0%,用量为1.25 ml的条件下,用光辐照强度为254 nm:23.9μW/cm2、297 nm:2.7μW/cm2、365 nm:101.2μW/cm2、420 nm:118μW/cm2,光通量86.3×102lm的卤灯辐照2 h,对真菌的杀灭效果近100%。[结论]纳米TiO2光催化剂具有良好的光催化活性,在实验室模拟太阳光下对花卉炭疽病菌有较强的杀灭作用。[ Objective ] The controlling method of new type of flower anthrax bacteria was researched. [ Method ] The effect of the flower anthrax bacteria with the nano-TiO2 photocatalyst under the simulation of the sunlight in laboratory was researched including the concentration and application amount of catalyst. [ Results] The results showed that the controlling efficiency was 92.0% while the concentration of the nano- TiO2 photocatalyst was 1.0% ; the best efficiency, 87.3% while the amount of nano-TiO2 photocatalyst was 1.25 ml; and with the increment of the time or intensity of light, the effect of nano-TiO2 photocatalyst was gradually strengthened. 100% controlling efficiency of the flower anthrax bacteria could be produced with the halogen lamp with the luminous flux of 86.3 × 10^2 lm, the light intensity of 254 nm ：23.9 μW/cm^2, 297 nm,2.7 μW/cm^2, 365 nm：101.2 μW/cm^2 or 420 nm： 118 μW/cm^2, under the condition of the concentration of the 1.0% nano-TiO2 photocatalyst and the amount of 1.25 ml nano-TiO2 photocatalyst for two hours treatment. [ Conclusion] The nano-TiO2 photocatalyst had good activity and strong killing ability to flower anthrax bacteria under the simulation of the sunlight in laboratory.

关 键 词：光催化氧化 炭疽病菌 灭菌效果 

分 类 号：S477.9[农业科学—农业昆虫与害虫防治]