以花生壳炭（PAC）为载体，采用溶剂热法原位合成了Cu-Fe₃O₄@PAC，并用于非均相Fenton催化降解罗丹明B溶液。利用SEM、XRD、氮气吸附-脱附和XPS方法对合成的催化剂进行表征和分析。结果表明，将纳米Cu-Fe₃O₄负载于花生壳炭后，纳米Cu-Fe₃O₄的团聚程度减小、分散程度增大、结晶度明显降低，晶相结构为单质铜和Fe₃O₄，Cu-Fe₃O₄@PAC表面富含Fe（Ⅱ）、Fe（Ⅲ）和Cu（0）位点，有效提高了对罗丹明B的降解性能。在纳米Cu-Fe₃O₄@PAC质量浓度为0.3 g/L、H₂O₂浓度为20 mmol/L、溶液pH为4.5、反应温度为35℃、反应时间为2 h的条件下，罗丹明B降解率达91.4%，一级反应速率常数为0.020 7 min^-1，比无花生壳炭载体的纳米Cu-Fe₃O₄对罗丹明B的降解率增加了26.8%。

Taking peanut shell-derived carbon (PAC) as a carrier,Cu-Fe₃O₄@PAC is synthesized in situ via solvothermal method and is used to catalyze heterogeneous Fenton catalytic degradation of rhodamine B solution.SEM,XRD,nitrogen adsorption-desorption and XPS methods are employed to characterize the synthesized catalyst.The results show that the loading of nano scale Cu-Fe₃O₄ on peanut shell-derived carbon increases the dispersion of nano-Cu-Fe₃O₄ with higher crystallinity.The crystal structure of nano-Cu-Fe₃O₄@PAC is elemental copper and Fe₃O₄.The surface of Cu-Fe₃O₄@PAC is rich in Fe(Ⅱ),Fe(Ⅲ) and Cu(0) sites,which contributes to the enhanced degradation of rhodamine B.The degradation rate of rhodamine B reaches 91.4% with a first order reaction rate constant of 0.020 7 min^-1 under the conditions for catalytic degradation reaction as follows:the dosage of Cu-Fe₃O₄@PAC is 0.3 g·L^-1,the dosage of H₂O₂ is 20 mmol·L^-1,the solution pH is 4.5,the reaction temperature remains at 35℃,and the reaction lasts for 2 hours.The degradation rate of rhodamine B over Cu-Fe₃O₄@PAC increases 26.8% than that over nano-Cu-Fe₃O₄.

张宇(1995-),男,硕士研究生,研究方向为功能材料的制备与应用,1255083216@qq.com