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将Zn粉末置于流量为500mL/min的NH3气流中,在600℃氮化温度下氮化120min的最佳条件下,制备出高质量的Zn3N2粉末.用x射线衍射(XRD)测量了Zn3N2粉末的结构,Zn3N2粉末是具有立方结构的晶体,其晶格常数a为0.9788nm.用扫描电子显微镜(SEM)观察了Zn3N2粉末的表面形貌,发现Zn3N2粉末具有非常丰富的晶粒表面形貌.用透射电子显微镜(TEM)验证了晶粒形状的多样性.X射线光电子谱(XPS)表明Zn3N2的化学键状态与ZnO及金属Zn明显不同,表明N-Zn键的形成.用计算机模拟了Zn3N2晶体的立体结构,用高分辨电子显微镜(HRTEM)观察了Zn3N2粉末的内部结构,观察结果与Partin等提出的Zn3N2结构模型符合很好.
The Zn powder was placed in an NH3 gas flow with a flow rate of 500mL / min and the Zn3N2 powder was prepared under the optimum conditions of nitriding at 600 ℃ for 120min at 600 ℃ .The Zn3N2 powders were measured by X-ray diffraction (XRD) , The Zn3N2 powder is a cubic structure with a lattice constant a of 0.9788nm.The surface morphology of Zn3N2 powder was observed by scanning electron microscopy (SEM), and it was found that the Zn3N2 powder has a very rich surface morphology. X-ray photoelectron spectroscopy (XPS) showed that the chemical bond state of Zn3N2 was significantly different from that of ZnO and metallic Zn, indicating the formation of N-Zn bond.The structure of Zn3N2 crystal The internal structure of Zn3N2 powder was observed by high resolution electron microscope (HRTEM). The observed results are in good agreement with the Zn3N2 structure model proposed by Partin et al.