Copper ferrite (denoted as CuFe₂O_4MOF), prepared via a complexation reaction to obtain bimetal–organic frameworks (Cu/Fe bi-MOFs), followed by a combustion process to remove the MOF template, is employed as a heterogeneous activator to promote sulfite autoxidation for the removal of organic contaminants. At pH 8.0, more than 80% of the recalcitrant organic contaminant iohexol (10 μM) can be removed within 2 min by the activation of sulfite (500 μM) with CuFe₂O_4MOF (0.1 g L⁻¹). CuFe₂O_4MOF exhibits more pronounced catalytic activity in accelerating sulfite autoxidation for iohexol abatement compared to that fabricated by hydrothermal and sol–gel combustion methods. Radical quenching studies suggest that the sulfate radical (SO₄^•−) is the main reactive species responsible for iohexol abatement. The performance of CuFe₂O_4MOF/sulfite for iohexol abatement can be affected by several critical influencing factors, including the solution pH and the presence of humic acid, Cl⁻, and HCO₃⁻. The effect of the ionic strength and the results of the attenuated total reflectance–Fourier transform infrared (ATR–FTIR) analysis indicate that sulfite autoxidation in the presence of CuFe₂O_4MOF involves an inner-sphere interaction with the surface Cu(II) sites of CuFe₂O_4MOF. X-ray photoelectron spectroscopy (XPS) characterization suggests that the surface Cu(II)–Cu(I)–Cu(II) redox cycle is responsible for efficient SO₄^•− production from sulfite. Overall, CuFe₂O_4MOF can be considered an alternative activator for sulfite autoxidation for potential application in the treatment of organic-contaminated water.

通过络合反应获得双金属有机骨架（Cu / Fe bi-MOFs）制备的铁氧体铜（表示为_{CuFe 2} O _4MOF），然后通过燃烧过程除去MOF模板，用作多相活化剂以促进亚硫酸自氧化去除有机污染物。在pH 8.0下，通过用_{CuFe 2} O _4MOF（0.1 g L ^-1）活化亚硫酸盐（500μM），可以在2分钟内除去80％以上的顽固有机污染物碘海醇（10μM ）。的CuFe ₂ Ø _4MOF与通过水热法和溶胶-凝胶燃烧法制备的相比，在加速亚硫酸氢己酯的亚硫酸盐自氧化过程中显示出更明显的催化活性。自由基猝灭研究表明，硫酸根（SO ₄ ^•−）是负责减少碘海醇的主要反应性物质。的CuFe的性能₂ ö _4MOF /亚硫酸盐为碘海醇消减可以通过几种关键影响因素，包括溶液的pH值和腐殖酸的存在，氯的影响^- ，和HCO ₃ ^-。离子强度的影响和衰减的全反射-傅立叶变换红外（ATR-FTIR）分析结果表明，存在_{CuFe 2} O _4MOF的亚硫酸盐自氧化涉及与表面Cu（II）位置的内球相互作用的_{CuFe 2} O _4MOF。X射线光电子能谱（XPS）表征表明，表面Cu（II）–Cu（I）–Cu（II）氧化还原循环是由亚硫酸盐有效产生SO ₄ ^•的原因。总体而言，可以将_{CuFe 2} O _4MOF视为亚硫酸盐自氧化的替代活化剂，可潜在地用于处理有机污染的水。