Microstructure and Optical Characteristics of Nickel Nanoparticles Obtained by One-Step Synthesis Method
摘要
Nickel nanoparticles were synthesized at room temperature by a one-step method of chemical reduction of Ni ions from NiCl2∙6H2O using NaBH4. The microstructure of the nanoparticles was studied by x-ray diffraction, Raman spectroscopy, and scanning and transmission electron microscopy. An analysis of x-ray diffraction and Raman spectroscopy data showed that the obtained nanoparticles had the cubic metallic Ni structure with a crystallite size (coherent scattering region) of 3–6 nm. Studies of the morphology indicated that the Ni nanoparticles were spherical in shape and in contact with each other to form large agglomerates of nanograins.