Authors: Ruirui Lu Peng Liu Xiaojuan Chen
Publish Date: 2015/02/21
Volume: 94, Issue: 4, Pages: 484-489
Abstract
In the present study the biological effect of TiO2 nanoparticles on cyanobacteria cells was studied using Microcystis aeruginosa M aeruginosa as a model NanoTiO2 as a photocatalysts agent used for water treatment may pose a risk to ecosystems especially for the water organisms such as cyanobacteria Scanning electron microscope SEM images provided that with the increasing of photocatalytic time slime layer on the cell surface was damaged and sunk Attenuated total reflectance fourier transform infrared ATRFTIR spectroscopy revealed that the vibration peaks of C–C C–H C=O P=O weakened within 12 h According to the dynamic analysis of the infrared peaks the damage on the cell groups under nanoTiO2 photocatalysis with different time periods was analyzed The concentrations of K+ Ca2+ Mg2+ released from the cells were measured which indicated that nanoTiO2 photocatalysis have changed the cell membrane permeability and fluidity of M aeruginosa
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