【摘要】 采用溶剂热法合成了铁基金属有机骨架材料MIL-88B（Fe）,将其作为类芬顿催化剂用于催化降解水中磺胺甲恶唑（SMX）。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、傅立叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）等对催化剂的结构和性能进行表征,并研究了H₂O₂浓度、催化剂投加量、溶液初始pH和污染物初始浓度等对SMX降解效果的影响。结果表明,在H₂O₂摩尔浓度为6.0mmol/L、催化剂投加量为0.2g/L、pH为4、SMX为5mg/L的优化反应条件下,MIL-88B（Fe）对SMX的降解率可达99%。在较宽的pH（4～6）范围内,MIL-88B（Fe）仍保持较好的催化活性,且5次循环使用后对SMX去除率仍可达95%以上。表明合成的MIL-88B（Fe）具有较高的催化活性和重复性能,是一种优良的非均相类芬顿催化剂。更多还原

【Abstract】 The iron-based metal organic framework MIL-88 B(Fe)was synthesized by a solvothermal method and used as a heterogeneous Fenton catalyst for the catalytic degradation of sulfamethoxazole(SMX).The X-ray diffraction(XRD),scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS)were used to characterize the structure and properties of the MIL-88 B(Fe),and the effects of H2 O2 concentration,catalyst dosage,initial pH value and initial concentration of pollutants on the degradation efficiency of SMX were investigated.The results showed that the degradation efficiency of SMX was 99%at the optimal operating conditions of 6.0 mmol/L H2 O2,0.2 g/L MIL-88 B(Fe),5 mg/L SMX and pH =4.MIL-88 B(Fe)maintained a good catalytic activity in a wide range of pH(4-6).Furthermore,the degradation efficiency of SMX reached 95% even MIL-88 B(Fe) was reused for five consecutive runs.The synthesized MIL-88 B(Fe)exhibited a high catalytic activity and good reusability,and could be applied as an excellent heterogeneous Fenton catalyst.更多还原