Photocatalytic Performance and Antimicrobial Activity of Microwave-assisted Hydrothermally Synthesized, Visible-light Responsive Sm-doped ZnO Crystallites
HUI Aiping1, MA Jianzhong1, LIU Junli2
1 College of Resources and Environment, Shaanxi University of Science & Technology, Xi’an 710021; 2 College of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi’an 710021;
Abstract: Using Zn(NO3)2·6H2O as zinc source, Sm(NO3)3·6H2O as dopant, sodium dodecyl sulfate as revulsant, absolute alcohol and water as mixed solvent, a series of samarium-doped ZnO crystallites varied in Sm content were successfully prepared by microwave-assisted hydrothermal method. Doping Sm3+ into ZnO lattice changesits crystal structure and also has an obvious effect on morphology of ZnO crystallites. The photocatalytic performances towards rhodamine B, antimicrobial activity against candida albicans and aspergillusflavus of doped ZnO crystallites were investigated in detail. The results indicated that [Sm]/[Zn]=1%crytallite has better photocatalytic performance and antimicrobial activity. Under a simulated visible light irradiation (500 W Xenon lamp), the decolorization rate of rhodamine B was 75.9% after 160 min, TOC removal rate was 66.3%. Colony count result showed that the inhibition rates of 1% samarium-doped ZnO crytallite against candida albicans and aspergillusflavus rate were 81% and 77%, respectively.
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2017, Vol. 31 
