摘要 : Fe3O4/NiO composite oxides have been synthesised and characterised by various analytical techniques. Fe3O4/NiO was used as the catalyst to activate NaHSO3, and supplemented with visible light illumination, which formed a novel pho... 展开 Fe3O4/NiO composite oxides have been synthesised and characterised by various analytical techniques. Fe3O4/NiO was used as the catalyst to activate NaHSO3, and supplemented with visible light illumination, which formed a novel photo-assisted Fenton-like system in degradation of dye in wastewater. By changing the calcination time of the precursor, three composite oxides are obtained. In degradation of the azo dye Orange II, several experimental results show that Fe3O4/NiO(8h) has the best adsorption and catalytic ability, 90% of the dye can be removed within 2 h in the Fe3O4/NiO(8h)/NaHSO3 system. Also the mechanism of the degradation is discussed. 收起