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在水-醇-氨液相体系中,沉淀合成了酒石酸镍纳米晶片和花状酒石酸镍颗粒。以花状酒石酸镍颗粒为前驱体,在CO2气氛中,于380和420 °C条件下,通过热分解过程分别制备花状金属镍颗粒。实验样品采用IR,DSC-TG,XRD和SEM测试技术进行分析,测试结果表明:液相沉淀法制备的样品为纯相的酒石酸镍,在1.0 mol的酒石酸镍中含有约2.5 mol的结晶水,花状的酒石酸镍颗粒直径约40 μm,纳米晶片花瓣的厚度约0.1 μm;热分解制备的具有银白光泽的粉体为纯相的具有面心立方结构的金属镍粉,花状金属镍颗粒直径约10 μm,纳米晶片花瓣的厚度约0.3 μm。
In water - alcohol - ammonia liquid phase system, nickel tartrate nanocrystalline particles and flower-like nickel tartrate particles were precipitated. Flower-like particles of nickel tartrate were used as precursors, and flower-shaped metallic nickel particles were respectively prepared by pyrolysis at 380 and 420 ° C under CO2 atmosphere. The experimental samples were analyzed by IR, DSC-TG, XRD and SEM. The results showed that the sample prepared by liquid-phase precipitation method was pure phase of nickel tartrate, containing about 2.5 mol of water of crystallization in 1.0 mol of nickel tartrate, The diameter of the flower-like nickel tartrate particles is about 40 μm, and the thickness of the petal of the nanocrystalline wafer is about 0.1 μm. The powder with silver-white luster produced by thermal decomposition is a pure phase metal nickel powder with a face-centered cubic structure and the flower- About 10 μm, the thickness of nanocrystalline petals is about 0.3 μm.