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首页> 外文期刊>Journal of nano research >Determination of the Growth Rate of Hydrothermally Synthesised ZnO_2 Crystallites
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Determination of the Growth Rate of Hydrothermally Synthesised ZnO_2 Crystallites

机译:水热合成ZnO_2微晶生长速率的确定

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Powders consisting of nanoparticles of zinc peroxide were prepared via a simple hydrothermal process using zinc acetate dihydrate and hydrogen peroxide precursors. The size of the crystallites was determined using x-ray powder diffraction. Over a period of 5 hours the crystallite radius increased from 4 nm-9 nm at a temperature of 68 degrees C +/- 5 degrees C, with growth rate constant of 0.23 nm(3) min(-1)calculated using the Lifshitz, Slyozov, and Wagner model. The powders were further characterised with High Resolution Transmission Electron Microscopy, Energy Dispersive X-ray analysis, and Small Angle X-ray Scattering, showing well-crystallised ZnO2 nanoparticles.
机译:由乙酸锌二水合物和过氧化氢前体通过简单的水热工艺制备由过氧化锌的纳米颗粒组成的粉末。使用X射线粉末衍射确定微晶的尺寸。在5小时内,在68摄氏度+/- 5摄氏度的温度下,微晶半径从4 nm-9 nm增加,使用Lifshitz计算得出的生长速率常数为0.23 nm(3)min(-1), Slyozov和Wagner模型。通过高分辨率透射电子显微镜,能量色散X射线分析和小角度X射线散射对粉末进行进一步表征,显示出结晶良好的ZnO2纳米粒子。

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