Nanostructured ZnO synthesis and its application for effective disinfection of <Emphasis Type="Italic">Escherichia coli</Emphasis> micro organism in water |
| |
| Authors: | M A Gondal M A Dastageer A Khalil K Hayat Z H Yamani |
| |
| Institution: | (1) Laser Research Group, Physics Department and Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia;(2) Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia |
| |
| Abstract: | Nanostructured ZnO photo catalyst was synthesized by precipitation method and was applied in conjunction with 355 nm pulsed
laser irradiation for effective disinfection of the water contaminated with Escherichia coli micro organism. The morphological studies using X-Ray Diffractometer (XRD) and Transmission Electron Microscope (TEM) were
carried out on the synthesized nano-ZnO, and these studies indicated that the catalyst has the crystallographic structure
of hexagonal wurtzite and has the grain size of around 20–40 nm. The bacteria decay rate constants were estimated for nine
different concentrations of nano-ZnO in infected water. The parametric optimization was carried out, and we could reach the
decay rate constant as high as 0.24 min,−1 which is higher than micro-structured ZnO and the familiar TiO2 photo catalysts under similar experimental condition. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
