Photo-degradation of organic dyes: simple chemical synthesis of Ni(OH)_2 nanoparticles, Ni/Ni(OH)_2 and Ni/NiO magnetic nanocomposites

摘要

In this work Ni, Ni(OH)_2, NiO nanoparticles as well as Ni/Ni(OH)_2 and Ni/NiO nanocomposites were synthesized via a simple chemical precipitation method in aqueous solution. The prepared products were characterized by X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared (FT-IR) spectroscopy. Alternating gradient force magnetometer (AGFM) illustrated ferro-magnetic behaviour of Ni nanoparticles as well as Ni/Ni(OH)_2 and Ni/NiO nanocomposites. The photocat-alytic behaviour of Ni-NiO nanocomposites was evaluated using the degradation of organic dyes under ultraviolet light irradiation. The results show that Ni-NiO nanocomposites have applicable magnetic and photocatalytic performance.