Synthesis, characterization and optical properties of Zn_1−xTi_xO nanoparticles prepared via a high-energy ball milling technique

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• 作者：Sumetha Suwanboon ; Pongsaton Amornpitoksuk ; Phuwadol Bangrak
• 关键词：A. Powder ; A. Milling ; B. X-ray diffraction ; D. ZnO
• 刊名：Ceramics International
• 出版年：2011
• 出版时间：January 2011
• 年：2011
• 卷：37
• 期：1
• 页码：333-340
• 全文大小：651 K

文摘

Zn_1−xTi_xO (x = 0, 0.01, 0.03 and 0.05) nanoparticles were prepared by high-energy ball milling at 400 rpm. The milled powders were characterized by X-ray diffractometer (XRD) and the results exhibited that Ti-doped ZnO nanoparticles consisted of single phase with hexagonal structure when the mixtures of ZnO and TiO₂ powders were milled for 20 h. The crystallite size reduced as a function of the doping content and milling time from 1 to 10 h then increased after milling for 20 h and when the annealing temperature increased. The strain changed inversely to the crystallite size. A wider band-gap was obtained by increasing the doping content and annealing temperature because of a reduction in defect concentration. Both ZnO- and Ti-doped ZnO nanoparticles caused damage to S. aureus, E. coli, P. mirabilis, S. typhi and P. aeruginosa.