Synergistic oxygen vacancy-rich CuO/visible light activation of peroxymonosulfate for degradation of rhodamine B: fast catalyst synthesis and degradation mechanism
Yangqiao Liu, Qing Lan, Shengrui Sun, Qingfeng Yang
Abstract
and low concentration of humic acid in a CuO-SC/PMS/Vis system. Combined with the results of electron spin resonance paramagnetic spectroscopy, X-ray photoelectron spectroscopy and radical quenching experiments, holes, superoxide radicals and a small amount of sulfate radicals, hydroxyl radicals and singlet oxygen were involved in the CuO-SC/PMS/Vis system. Furthermore, a possible degradation mechanism based on the synergistic effect of radical reaction and non-radical reaction was proposed based on the above results.
Topics & Concepts
Rhodamine BChemistryCatalysisDiffuse reflectance infrared fourier transformPhotochemistryRadicalPhotocatalysisElectron paramagnetic resonanceSinglet oxygenX-ray photoelectron spectroscopyInorganic chemistryNuclear chemistryOxygenChemical engineeringOrganic chemistryEngineeringPhysicsNuclear magnetic resonanceAdvanced oxidation water treatmentAdvanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar Cells