Morphological, Photocatalytic and Bactericidal Properties of ZnO Powders Prepared by a Precipitation Method

Sumetha Suwanboon; Sarunya Klubnuan; Pongsaton Amornpitoksuk; Phuwadol Bangrak

doi:10.4028/www.scientific.net/AMM.749.461

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Morphological, Photocatalytic and Bactericidal Properties of ZnO Powders Prepared by a Precipitation Method
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 749Morphological, Photocatalytic and Bactericidal...

Morphological, Photocatalytic and Bactericidal Properties of ZnO Powders Prepared by a Precipitation Method

Abstract:

Structural, optical and photocatalytic properties of ZnO powders prepared by a precipitation method were systematically investigated by means of X-ray diffraction (XRD), scanning electron microscope (SEM), UV-Vis diffuse reflectance measurement and UV-Vis absorbance measurement. The antibacterial activity was tested by a broth microdilution method. All calcined ZnO powders exhibited a hexagonal wurtzite structure. The ZnO powders formed various shapes depending upon the concentration of n-propylamine used. The E_g value of ZnO powders depended upon defect concentration. The photocatalytic property of ZnO powders depended on the particle shape and defect concentration. The best photocatalytic efficiency of 100% was observed from the ZnO powders prepared at R = 2 after irradiating by the blacklight for 90 min. All ZnO powders can damage only S. aureus and the agglomerated sheet-like ZnO powders prepared at R = 2 showed the best antibacterial property with a MIC value of 1.5625 mg/mL.

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Periodical:

Applied Mechanics and Materials (Volume 749)

Pages:

461-465

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.749.461

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Online since:

April 2015

Authors:

Sumetha Suwanboon*, Sarunya Klubnuan, Pongsaton Amornpitoksuk, Phuwadol Bangrak

Keywords:

Bactericidal Property, N-Propylamine, Photocatalytic Property, ZnO Powder

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