As magnetic catalyst material, great studies have been made to improve the catalytic performance of Fe₃O₄ nanoparticles by changing the structure, but little attention has been paid to the relationship between the surface properties (the electronegativity, electron transport capacity) and the catalytic performance of Fe₃O₄ nanoparticles. Therefore, this work was devoted to the investigation of the relationship by loading Fe₃O₄ nanoparticles on graphene oxide(GO) grafted with N,N,N',N'-Tetrakis (2-hydroxyethy)ethylenediamine (THEED), which was denoted as [email protected]₃O₄. N atoms in THEED and GO have strong electronegativity and electron mobility respectively, which greatly change the surface properties of the Fe₃O₄ composite. A large number of characterization methods have proved that the original structure of the produced Fe₃O₄ nanoparticles has not been changed, and the Zeta potential and cyclic voltammetry curves confirmed that the surface properties of Fe₃O₄ composite have been improved. In the Fenton degradation experiment of MB, [email protected]₃O₄ can make the degradation rate of MB reach 100% in 8 min, which verified that the strong electronegativity and electron transport capacity were beneficial to the improvement of the catalytic performance of Fe₃O₄ composite.

作为磁性催化剂材料，已经通过改变结构来改善Fe ₃ O ₄纳米颗粒的催化性能的大量研究，但是对表面性质（电负性，电子传输能力）与催化性能之间关系的关注很少。 Fe ₃ O ₄纳米粒子的性能 因此，这项工作致力于通过将Fe ₃ O ₄纳米颗粒负载在接枝了N，N，N'，N'-四（2-羟基乙基）乙二胺（THEED）的氧化石墨烯（GO）上的关系。表示为[电子邮件保护] ₃ O ₄。THEED和GO中的N原子分别具有很强的电负性和电子迁移率，极大地改变了Fe ₃ O ₄复合材料的表面性能。大量的表征方法证明了所生产的Fe ₃ O ₄纳米颗粒的原始结构没有改变，并且Zeta电位和循环伏安曲线证实了Fe ₃ O ₄复合材料的表面性能得到了改善。在MB的Fenton降解实验中，[电子邮件保护] ₃ O ₄可以使MB在8 min内降解率达到100％，证明强电负性和电子传输能力有利于提高Fe ₃ O ₄复合材料的催化性能。