Solvothermal synthesis to NiE2 (E = Se, Te) nanorods at low temperature

NiE2 (E = Se, Te) nanorods were directly synthesized through the reaction o f NiCl2, and selenium or tellurium in an autoclave at 160 similar to 180 de grees C for 10 similar to 15 h, using ethylenediamine as a solvent. X-ray p owder diffraction patterns and transmission electron microscope images show that the products are cubic NiSe2 and hexagonal NiTe2 phase, respectively, in the form of well-crystallized nanorods. A possible mechanism of;he form ation of NiE2 nanorods in the solvothermal process is proposed. The solvent ethylenediamine plays an important role in the formation of NiE2 nanorods. (C) 2000 Acta Metallurgica Inc.