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稀土改性Ag掺杂纳米TiO₂对抑制蓝藻生长的研究

Study on MnO₂-CeO₂-Ag Dopant on Dano-TiO₂ in Photocatalytic Restraint Cyanobacteria

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【Author】 YIN Hai-chuan 1, LIN Qiang 2, TU Xue-yan 3, YANG Yang 4, CAI Xiao-lan 5,MA Zhi-gang 3 (1. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China; 2. Chemistry Department of Yunnan University, Kunming 650091, China;?3. Biology Department of Yunnan University, Kumming 650091, China;4. Hainan University,Haikou 570228, Hainan, China;? 5. Faculty of Material and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China)

【机构】昆明理工大学国土资源工程学院；云南大学化学系；云南大学生物系；海南大学；昆明理工大学材料与冶金工程学院；昆明理工大学材料与冶金工程学院昆明650093；昆明650091；海口570228；昆明650093；昆明650093；

【摘要】利用纳米TiO2 和稀土改性银掺杂纳米TiO2 在太阳光照射下进行光催化抑制蓝藻的实验研究 ,经对实验蓝藻的光合速率、呼吸速率和蓝藻叶绿素的吸光度的测定证明 ,纳米二氧化钛对蓝藻生长具有一定抑制作用 ,但效果不好 ;经稀土改性银掺杂的纳米TiO2 的样品 ,蓝藻的光合速率、呼吸速率接近为 0 ,蓝藻吸光度值降低了 88.4% ,显微镜观察显示蓝藻细胞壁被破坏 ,说明稀土改性Ag掺杂纳米TiO2 对抑制蓝藻生长效果较好更多还原

【Abstract】 Nano-TiO 2 and MnO 2-CeO 2-Ag dopant nano-TiO 2 are used to restrain cyanobacteria under sunlight. It is found that the absorption value of cyanobacteria degraded mphotorespiration rate of cynaobactria become very slowly compared with those without photocatalytic. Observed under the electric microscope cell walls are broken, so nano-TiO 2 and MnO 2-CeO 2-Ag dopant nano-TiO 2 can achieve a good effect in photocatalytic restraint cyanobacteria.更多还原