摘要 :本文采用一步水热法制备了一系列不同比例的GO(r)-MnFe2O4复合材料（r=mGO/(mGO+mMnFe2O4)），研究其光催化性能和电化学储电性能，通过调节GO的含量，筛选性能最优的光电复合材料。通过XRD、BET、SEM、UV-Vis等手段对产物的形貌和结构进行了表征，结果表明：复合材料中MnFe2O4纳米颗粒均匀地附着在石墨烯表层。采用可见光催化降解亚甲基蓝为探针反应研究其光催化性能；采用循环伏安、恒电流充放电和交流阻抗测试的方法对复合材料的电化学性能进行了探究。结果表明：在GO含量为40%的条件下，氧化石墨烯-MnFe2O4复合材料光电性能达到最优，最高光催化降解率高达 95。3%；但该复合材料的电化学性能不太理想，最高比容量为16。22Fg-1，需要进一步的改善。94647

毕业论文关键词：水热法，氧化石墨烯-MnFe2O4， 光催化 ，电化学 

Abstract:The GO(r)-MnFe2O4 composites with different ratio of GO(r = mGO / (mGO + mMnFe2O4)) were prepared by hydrothermal method。 The morphology and structure of the product were characterized by XRD, BET, SEM and UV-Vis。 The results showed that MnFe2O4 nanoparticles were uniformly adhered to the surface of grapheme oxide。 The content of GO in GO(r)-MnFe2O4 was adjusted to achieve its best photocatalytic and energy storing property。 Photo degradation of methylene blue by visible light was taken to investigate the catalytic ability of GO(r)-MnFe2O4。 At the same time, the electrochemical properties of the composites were investigated by cyclic voltammetry, constant current charging and discharging and AC impedance testing。 Results show that the photocatalytic activity of GO-MnFe2O4 composite is up to 95。3% under the condition of GO content of 40%。 The electrochemical performance shows that the maximum specific capacity is 16。22 F g-1。 However, from the electrochemical test results found that the electrochemical properties of the composite material is not ideal, it need to be studied for further improvement。

Key words: Hydrothermal, GO-MnFe2O4 , Photocatalytic, Electrochemical

目录

1 绪论 1

2 实验方法 2

2。1 实验试剂 2

2。2 实验仪器 2

2。3 氧化石墨烯-MnFe2O4复合材料的制备 2

2。4 可见光催化活性测试 3

2。5 电化学测试 3

2。5。1 电极的制作 3

2。5。2电化学性能测试 3

3 结果与讨论 4

3。1 氧化石墨烯-MnFe2O4的表征及结果分析 4

3。1。1 氧化石墨烯-MnFe2O4的X射线衍射测试 4

3。1。2 氧化石墨烯-MnFe2O4 的BET表征分析 5

3。1。3 SEM分析 6

3。1。3 FTIR分析 7

3。1。4 UV-Vis DRS分析 8

3。2 光催化结果讨论 10

3。3 电化学性能分析 11

3。3。1 循环伏安性能分析（CV） 11

3。3。2计时电位分析 13

        3。3。3 交流阻抗性能分析 14

结论 16

致谢