Abstract
NiE 2 (E = Se, Te) nanorods were directly synthesized through the reaction of NiCl 2 and selenium or tellurium in an autoclave at 160 ∼ 180°C for 10 ∼ 15 h, using ethylenediamine as a solvent. X-ray powder diffraction patterns and transmission electron microscope images show that the products are cubic NiSe 2 and hexagonal NiTe 2 phase, respectively, in the form of well-crystallized nanorods. A possible mechanism of the formation of NiE 2 nanorods in the solvothermal process is proposed. The solvent ethylenediamine plays an important role in the formation of NiE 2 nanorods.
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