Chiang Mai Journal of Science

The improvement of the band gap energy and antibacterial activities of CeO2/ZnO nanocomposites prepared by high energy ball milling

Paper Type	Contributed Paper
Title	The improvement of the band gap energy and antibacterial activities of CeO2/ZnO nanocomposites prepared by high energy ball milling
Author	Sumetha Suwanboon*, Pongsaton Amornpitoksuk and Phuwadol Bangrak
Email	ssuwanboon@yahoo.com; sumetha.s@psu.ac.th
Abstract: CeO2/ZnO nanocomposites were prepared by mechanical milling. The crystal structure, morphology and optical properties were characterized by X-ray diffraction method, scanning electron microscopy and UV-vis spectrophotometer, respectively. The antibacterial activity was tested by a broth microdilution method to obtain the minimum inhibitory concentrations (MIC). The crystallite size decreased from 29.78 to 20.45 nm whereas the micro-strain increased from 0.0814 to 0.1202 when the CeO2 powders were loaded from 0 to 10 mol%. The widest optical band gap of 3.135 eV was obtained from 5 mol% CeO2/ZnO nanocomposite. The antibacterial activity was improved as a function of the CeO2 loading contents. The best antibacterial activity was obtained from 10 mol%CeO2/ZnO nanocomposites that inhibited towards S. aureus and E. coli with MIC values of 0.78 mg/mL and 3.125 mg/mL, respectively.
Start & End Page	1129 - 1137
Received Date	2016-04-22
Revised Date
Accepted Date	2016-08-04
Full Text	Download
Keyword	CeO2/ZnO nanocomposite, mechanical milling, optical property, antibacterial property
Volume	Vol.45 No.2 (March 2018)
DOI
Citation	Suwanboon S., Amornpitoksuk P. and Bangrak P., The improvement of the band gap energy and antibacterial activities of CeO2/ZnO nanocomposites prepared by high energy ball milling, Chiang Mai J. Sci., 2018; 45(2): 1129-1137.
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