Liquid-phase Synthesis of NiO-loaded Ag Nanoparticles and Enhanced Photo-degradation Performance

摘要

We have synthesized layered Ni(OH)_2 via a facile liquid-phase precipitation method. NiO with a micro/nano-structure was obtained via calcining Ni(OH)_2 precursor at 350°C. The as-prepared NiO was utilized as a support to load Ag nanocrystals. SEM and TEM observations showed that Ag nanoparticles were homogeneously distributed onto NiO support and the Ag nanoparticles have sizes of 4-5 nm. The photocatalytic activity of NiO-loaded Ag was investigated by the photodegradation of methylene blue (MB) under the irradiation of visible light. The results suggest that the loading of Ag nanoparticles can enhance the photo-degradation performance of pristine NiO.