纳米铁铜混合金属氧化物活化过一硫酸盐降解亚甲基蓝  

Degradation of Methylene Blue by the Nano Iron-copper Mixed Metal Oxides for Activating Peroxymonosulfate

作　　者：秦淼 肖秀婵 吕开鑫 肖雨恒 任亚琦 QIN Miao;XIAO Xiuchan;LYV Kaixin;XIAO Yuheng;REN Yaqi(School of Materials and Environmental Engineering,Chengdu Technological University,Chengdu 611730,China)

机构地区：[1]成都工业学院材料与环境工程学院,成都611730

出　　处：《成都工业学院学报》2024年第4期1-6,共6页Journal of Chengdu Technological University

基　　金：四川省自然科学基金(2023NSFSC0913);成都工业学院科研项目(2022ZR024)。

摘　　要：通过共沉淀法和煅烧法制备纳米铁铜混合氧化物(CuO/Fe_(3)O_(4))作为催化剂,以活化过一硫酸盐(PMS)降解亚甲基蓝(MB)。利用X射线衍射仪、扫描电子显微镜对纳米CuO/Fe_(3)O_(4)复合材料的结构进行表征和分析。通过单因素实验考察对MB降解效果的影响,如纳米复合催化剂的投加量、过一硫酸盐(PMS)的浓度、初始pH、反应时间等因素。研究结果表明,纳米CuO/Fe_(3)O_(4)活化后的过一硫酸盐的降解率明显大于单一的过一硫酸盐,且通过实验确定最佳降解条件为:纳米复合CuO/Fe_(3)O_(4)的投加量为20 mg,过一硫酸盐(PMS)浓度为0.5 mmol/L,反应温度为35℃,反应初始pH为8,反应时间20 min,且在该最佳条件下,亚甲基蓝的降解率高达97.8%。The iron-copper mixed oxides(CuO/Fe_(3)O_(4))were prepared by co-precipitation and calcination,and were used as catalysts to activate peroxymonosulfate(PMS)and degrade methylene blue(MB).The structure of the CuO/Fe_(3)O_(4)composites was characterized and analyzed by using X-ray diffractometer and scanning electron microscope.The effect of nano-composite catalyst dosage,concentration of peroxymonosulfate(PMS),initial pH,reaction time and other factors on MB degradation were investigated by single factor experiment.The results show that the degradation rate of permonosulfate activated by nano-CuO/Fe_(3)O_(4)is significantly higher than that of single permonosulfate.The optimal degradation conditions are determined as follows:the dosage of nano-composite CuO/Fe_(3)O_(4)is 20 mg,the concentration of peroxymonosulfate(PMS)is 0.5 mmol/L,the reaction temperature is 35℃,the initial reaction pH is 8,and the reaction time is 20 min.Under the optimal conditions,the degradation rate of methylene blue is as high as 97.8%.

关 键 词：纳米CuO/Fe_(3)O_(4) 过一硫酸盐 活化 降解 亚甲基蓝 

分 类 号：X788[环境科学与工程—环境工程]