Synthesized and Photocatalytic Mechanism of the NiO Supported YMnO3 Nanoparticles for Photocatalytic Degradation of the Methyl Orange Dye

Abstract

Abstract The YMnO3, NiO, and NiO/YMnO3 nanocomposites are successfully prepared by a polyacrylamide gel method and a simple two phase recombination route. The phase structure, surface morphology, optical, magnetic and electrochemical properties and photocatalytic activity of as-prepared samples were measured by X-ray diffraction (XRD), Scanning electron microscope (SEM), UV-visible spectrophotometer, superconducting quantum interference device (SQUID), electrochemical workstation and 721 spectrophotometer. Phase structure analysis indicate that the YMnO3, NiO, and NiO/YMnO3 nanocomposites has good crystallization and no other impurities. The NiO supported YMnO3 composites improved the surface morphology, optical, magnetic and electrochemical properties and photocatalytic activity of YMnO3 nanoparticles significantly. Photocatalytic experiment analysis indicate that the NiO supported YMnO3 composites exhibits highest photocatalytic activity for degradation of the methyl red dye with dye concentration of 25 mg/L. The excellent photocatalytic activity for the NiO supported YMnO3 composites can be ascribed to the fast interfacial charge transfer, high effective charge separation and the ⋅OH radicals.