高分子网络凝胶法制备纳米ZnO的结构性能研究

Structure Properties of Nano ZnO Synthesized by Polymer Network Gel Method

采用高分子网络凝胶法制备了ZnO粉末样品。通过X射线衍射、扫描电镜等测试方法研究了样品的物相组成、微观形貌。X射线衍射测试结果显示,样品的衍射峰尖锐,各特征峰显示完整,与标准PDF卡片比对,证实粉末样品的物相为ZnO。使用Scherrer公式计算得到的晶粒度大小约为31.28nm,晶格常数分别为3.247和5.208。使用扫描电镜观测不同放大倍数下的样品形貌,发现晶粒外观形貌显现完整,晶粒尺寸大小与XRD测试结果相吻合。结果表明,实验成功制备了高质量的ZnO纳米多晶粉体,可以用于后续实验。

ZnO powder samples were prepared by polymer network gel method. The phase composition and microstructure of the samples were studied by X ray diffraction and scanning electron microscopy. The X-ray diffraction results show that the diffraction peaks of the samples are sharp and the characteristic peaks are complete. Compared with the standard PDF cards, it is confirmed that the phase of the powder samples is ZnO. The grain size calculated by Scherrer formula is about 31.28 nm, and the lattice constants are 3.247 and 5.208, respectively. Scanning electron microscopy (SEM) was used to observe the morphology of the samples at different magnification. It was found that the morphology of the grains was complete and the size of the grains coincided with the XRD results. The above test results show that high quality nano-polycrystalline ZnO powders have been successfully prepared and can be used in subsequent experiments.