利用溶胶-凝胶法制备γ-Al₂O₃、溶剂热法制备MIL-101（Fe）以及2种材料不同掺杂比的复合材料；研究了合成材料对吡蚜酮废盐溶液中COD的去除效果；并对材料晶体结构、表面形貌及表面元素价态进行分析。结果表明，05MIL-101（Fe）@Al₂O₃材料成功地将MIL-101（Fe）通过γ-Al₂O₃纳米棒的架桥、链接方式均匀负载到介孔氧化铝上，从而拥有大量反应活性位点。吡蚜酮废盐降解实验表明，05MIL-101（Fe）@Al₂O₃投加质量浓度为2.0 mg/L、双氧水浓度为120 mmol/L、初始pH为2.93时，20℃下振荡反应5 h，COD值去除率达到50.69%。高盐溶液体系使非均相类芬顿反应速率变慢、反应时间延长、双氧水使用量增加，但对于成分单一、有机物含量较少的废盐仍具有广阔的应用前景。

γ-Al₂O₃ is prepared via sol-gel method, and MIL-101(Fe) is prepared via solvothermal method.Then the composites with different doping ratios of γ-Al₂O₃ and MIL-101(Fe) are prepared by solvothermal method.The removal effect of COD in waste salts solution from pymetrozine production by the composites is studied, and the crystal structure, surface morphology and surface element valence of the composites are analyzed.It is shown that within 05MIL-101(Fe)@Al₂O₃ materials, MIL-101(Fe) has been uniformly loaded onto mesoporous alumina through the bridging and linking mode of γ-Al₂O₃ nanorods, which makes the materials have a large number of reactive sites.The degradation experiment of pymetrozine-related waste salts shows that COD removal rate reaches 50.69% when the dosage of 05MIL-101(Fe)@Al₂O₃ is 2.0 mg·L^-1, the dosage of hydrogen peroxide is 120 mmol·L^-1, the initial pH is 2.93, and the reaction lasts for 5 h at 20℃.A high salinity solution system can cause the heterogeneous Fenton-like reaction to slow down, prolongs the reaction time, and increases the consumption of hydrogen peroxide.However, it still has a broad application prospect for waste salts with single component and less organic matters.

孔雪鹏(1993-),男,硕士研究生,研究方向为工业废盐资源化利用,kongxp18@lzu.edu.cn。