【摘要】 采用氧化共沉淀法制备膨润土/Fe₃O₄/Fe⁰新型复合催化剂,并将其作为非均相类Fenton催化剂应用于高效氟氯氰菊酯农药模拟废水的降解。SEM、TEM、XRD和VSM等的表征结果显示,制备的催化剂Fe₃O₄与Fe⁰结构稳定,有较好的磁性,便于回收利用。降解实验结果表明,对于100 mL模拟废水,在m（Fe⁰）∶m（Fe₃O₄）=0.8,初始溶液p H=3.0,30%H₂O₂投加量为0.25 mL,催化剂投加量为0.40 g,反应时间为40 min的条件下,COD去除率为73.41%。膨润土/Fe₃O₄/Fe⁰是一种稳定的新型催化剂,重复利用性能优良。更多还原

【Abstract】 A new type of bentonite/Fe₃O₄/Fe⁰ composite catalyst was prepared by in-situ oxidation-precipitation method. Then it was used as a heterogeneous Fenton-like catalyst for the treatment of beta-cyfluthrin simulated wastewater. SEM,TEM,XRD and VSM characterization results showed that the prepared catalysts Fe₃O₄ and Fe⁰ had stable structures,good magnetic properties and easily recyclable ability. Degradation experiment results showed that when the ratio of m（Fe⁰）∶m（Fe3 O4） was 0.8,initial solution pH was 3.0,30%H₂O₂ dosage was 0.25 m L,and catalyst dosage was 0.40 g,the COD removal rate in 100 m L simulated wastewater was 73.41% after reaction for 40 min. Bentonite/Fe₃O₄/Fe⁰ is a new catalyst showing excellent stability and reusability.更多还原