载Pt纳米TiO2抑制滇池蓝藻生长的研究

Study on the inhibitory effect of Pt dopant on nano-TiO2 on growth of Cyanobacteria

摘要: 对蓝藻样品的叶绿素含量、光合速率、呼吸速率、氧化物岐化酶(SOD)活性以及超氧阴离子含量进行测定.比较研究纳米TiO2和负载Pt纳米TiO2对蓝藻生长抑制的影响.结果表明,与纳米TiO2相比,在太阳光下负载Pt纳米TiO2对蓝藻的抑制效果更好.另外,研究表明,载Pt纳米TiO2的载Pt量选择1.5%为最佳.

Abstract: The content of chlorophyll,the rates of photosynthesis,photorespiration,superoxide dimutase activity as well as content of O2·- in Cyanobacteria are determined.The inhibitory effects of nano-TiO2 and Pt dopant nano-TiO2 on the growth of Cyanobacteria were studied.The current results have showed,compared with nano-TiO2,Pt/TiO2 was more effective in inhibiting growth of Cyanobacteria under the sunlight.In addition,the current study has shown that 1.5% of Pt dopant nano-TiO2 exhibits the best inhibitory effect on the growth of algae of Cyanobacteria.