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采用溶剂热法制备Co、Ni共掺杂ZnO的纳米材料。样品的XRD图谱表明,不同浓度的掺杂都没有改变ZnO的晶体结构,样品均为六方纤锌矿结构;XPS结果揭示了钴和镍均以+2价离子形式存在,进一步证明了Co2+、Ni2+是以替代部分Zn2+的形式存在于晶格中;高分辨图像显示,所得样品为纳米棒结构,纳米棒长度约150 nm,直径约15 nm;mapping图像及EDS显示出Co2+、Ni2+已经掺杂成功而且在纳米棒中均匀分布;PL测试表明,Co2+、Ni2+的掺杂导致锌空位浓度的变化,从而使得紫外发光峰右移。
Preparation of Co, Ni codoped ZnO nanomaterials by solvothermal method. The XRD patterns of the samples show that the crystal structure of ZnO is not changed by doping at different concentrations, and the samples are of hexagonal wurtzite structure. XPS results reveal that both cobalt and nickel exist in the form of +2 valence ion, further confirming that Co2 +, Ni2 + Which is in the form of substituting part of Zn2 + in the crystal lattice. The high resolution image shows that the obtained sample is a nanorod with a length of about 150 nm and a diameter of about 15 nm. The mapping image and EDS show that Co2 + and Ni2 + have been successfully doped But also uniformly distributed in the nanorods. The PL test indicated that the doping of Co2 + and Ni2 + led to the change of zinc vacancy concentration, and the ultraviolet light emission peak shifted to the right.