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首页> 外文期刊>Physica, B. Condensed Matter >Mechano-chemical synthesis and optical properties of ZnS nanoparticles
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Mechano-chemical synthesis and optical properties of ZnS nanoparticles

机译：ZnS纳米粒子的机械化学合成和光学性质

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摘要

In the present work, we report the synthesis and optical properties of ZnS nanoparticles produced by the mechano-chemical route. We used zinc acetate and sodium sulphide as source materials in a high energy planetary ball mill at rotation speed of 300 rpm and vial rotation speed of 600 rpm with ball to powder (BPR or charge ratio CR) 5:1 for 30 and 90 min. The milled powders were washed with methanol to remove impurity and dried at 300 °C for 1 h. The prepared nanoparticles have been characterized using X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), UV-vis-NIR spectrophotometer and Fluorescence spectroscopy. The crystallite size of the synthesized ZnS nanoparticles is found to be in the range 7-8 nm which was calculated using Debye-Scherers formula. The value of optical band gap has been found to be in the range 3.80-4.15 eV. Room temperature photoluminescence (PL) spectrum of ZnS samples exhibit a blue emission peaked at 466 nm under UV excitation.
机译：在本工作中，我们报告了通过机械化学途径生产的ZnS纳米粒子的合成和光学性质。我们在高能行星式球磨机中以乙酸锌和硫化钠为原料，以300 rpm的转速和600 rpm的样品瓶转速，将球粉（BPR或装料比CR）为5：1分别为30分钟和90分钟。将研磨的粉末用甲醇洗涤以除去杂质，并在300℃下干燥1小时。使用X射线衍射（XRD），场发射扫描电子显微镜（FESEM），UV-vis-NIR分光光度计和荧光光谱来表征所制备的纳米颗粒。发现合成的ZnS纳米颗粒的微晶尺寸在7-8nm范围内，这是使用Debye-Scherers公式计算的。已经发现光学带隙的值在3.80-4.15eV的范围内。 ZnS样品的室温光致发光（PL）光谱在紫外线激发下显示出在466 nm处达到峰值的蓝色发射。

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