The structural, morphological, optical and mechanical properties of Zinc oxide (ZnO) nanoparticles annealed at different temperatures from 500 °C to 1000 °C with a step size of 100 °C were synthesized from Sol-Gel method. The X-ray diffraction study revealed that ZnO has hexagonal Wurtzite structure. Scanning Electron Microscope(SEM) images of the studied materials possess spherical morphology with induced porosity due to change in annealing temperature. The computed size of nanoparticles from Transmission Electron Microscopy (TEM) was 21 nm. The UV–Visible Spectroscopy revealed that the band gap decreased with increase of the temperature from 3.05eV to 2.82eV. Photoluminescence (PL) spectrum of ZnO nanoparticles shows that oxygen vacancy related defects increased as the temperature increases from 500 °C to 800 °C and decreased beyond 800 °C. The wear resistance of ZnO nanoparticles is found to increase with increase of temperature owing to the generation of oxygen vacancies. The maximum friction coefficient was assigned to largest grain size.

利用Sol-Gel法合成了氧化锌（ZnO）纳米粒子的结构，形貌，光学和机械性能，该纳米粒子在500°C至1000°C的不同温度下以100°C的步长进行了退火。X射线衍射研究表明ZnO具有六方纤锌矿结构。所研究材料的扫描电子显微镜（SEM）图像具有球形形态，并且由于退火温度的变化而具有诱导的孔隙率。由透射电子显微镜（TEM）计算的纳米颗粒的尺寸为21nm。紫外可见光谱显示带隙随温度从3.05eV升高到2.82eV而减小。ZnO纳米粒子的光致发光（PL）光谱表明，与氧空位相关的缺陷随着温度从500°C升高到800°C而增加，并在超过800°C时降低。发现由于氧空位的产生，ZnO纳米颗粒的耐磨性随着温度的升高而增加。最大摩擦系数被赋予最大晶粒尺寸。