【摘要】 在非均相芬顿反应中,在磁铁矿中当一些Fe2+和Fe3+部分地被钒离子取代,其催化效果也会改变。首先在一定条件下合成钒取代的磁铁矿。然后进行XRD分析,我们发现钒磁铁矿和磁铁矿的晶体结构没有明显差异。我们还对样品做了热重与差示扫描量热(TG-DSC)分析。后来我们又研究了钒磁铁矿对染料的物理吸附,结果显示,在酸性条件有利于物理吸附,并且钒磁铁矿的吸附效果比磁铁矿更好。与此同时,我们还研究了钒磁铁矿和磁铁矿对染料降解的催化效果。更多还原

【Abstract】 In heterogeneous Fenton reaction,when some Fe2 +and Fe3 +in the magnetite were partially replaced by vanadium ions,the catalytic effect of magnetite would change. Vanadium substituted magnetite was first synthesized under certain condition. XRD analysis was conducted. There was no significant difference in the crystal structure between vanadium substituted magnetite and magnetite. Thermogravimetric and differential scanning calorimetry( TG- DSC)analyses was also used. The physical adsorption of dye was researched by vanadium magnetite and magnetite,the result showed that acidic condition was helpful to the physical adsorption,and the adsorption effect by vanadium magnetite was better than magnetite. At the same time,the catalytic effect on the degradation of dye by vanadium magnetite and magnetite were also studied.更多还原