Title :
Synthesis and characterization of ZnO nanostructures with antimicrobial properties
Author :
Yiamsawas, D. ; Boonpavanitchakul, K. ; Kangwansupamonkon, W.
Author_Institution :
Nat. Nanotechnol. Center, Nat. Sci. & Dev. Agency, Pathumtani
Abstract :
ZnO nano-structures were synthesized via solvothermal processes in the presence of polymer template at 80degC for 24 hours and characterized by X-ray Diffraction (XRD), UV-vis spectroscopy, and Transmission Electron Microscopy (TEM) combined with energy dispersive X-ray spectroscopy (EDX) for elemental mapping. The effects of molecular weight of poly(vinyl pyrrolidone) (PVP) and poly(ethylene glycol) (PEG) on the morphology and size of ZnO were determined. The typical width and length are in the range of 9-12 nm and 58-97 nm, respectively. The ZnO nanocrystal showed antibacterial activity against Staphylococus aureus, Escherichia coli and Micrococcus luteus, which minimum inhibition concentration at 90% (MIC 90) is 156 mug/ml, 1.25 mg/ml and 20-40 mug/ml, respectively for PEG 6000 and 313 mug/ml, 2.5 mg/ml and 20-40 mug/ml, respectively for PVP 30K.
Keywords :
II-VI semiconductors; X-ray chemical analysis; X-ray diffraction; antibacterial activity; molecular weight; nanostructured materials; nanotechnology; polymers; semiconductor growth; transmission electron microscopy; ultraviolet spectra; visible spectra; wide band gap semiconductors; zinc compounds; EDX; TEM; UV-vis spectroscopy; X-ray diffraction; XRD; ZnO; ZnO nanostructures; antimicrobial properties; energy dispersive X-ray spectroscopy; molecular weight; poly(ethylene glycol); poly(vinyl pyrrolidone); polymer template; size 58 nm to 97 nm; size 9 nm to 12 nm; solvothermal processes; temperature 80 degC; time 24 h; transmission electron microscopy; Dispersion; Morphology; Nanocrystals; Nanostructures; Polymers; Spectroscopy; Transmission electron microscopy; X-ray diffraction; X-ray scattering; Zinc oxide; PEG; PVP; nanocrstalline structure; zinc oxide;
Conference_Titel :
Nanoscience and Nanotechnology, 2008. ICONN 2008. International Conference on
Conference_Location :
Melbourne, Vic.
Print_ISBN :
978-1-4244-1503-8
Electronic_ISBN :
978-1-4244-1504-5
DOI :
10.1109/ICONN.2008.4639264
