Host–Guest Interaction Induced Rapid Self-Assembled Fe3O4@Au Nanoparticles with High Catalytic Activity,Industrial & Engineering Chemistry Research

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Host–Guest Interaction Induced Rapid Self-Assembled Fe3O4@Au Nanoparticles with High Catalytic Activity
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-05-25 , DOI: 10.1021/acs.iecr.8b00894
Hongnan Qu _{1,

2,

3} , Liangrong Yang ₂ , Jiemiao Yu ₂ , Li Wang ₂ , Huizhou Liu _{1,

2}

Affiliation

A novel Fe₃O₄@Au nanocatalyst was successfully self-assembled induced by host–guest interaction between ferrocene and β-cyclodextrin. This self-assembly system consisted of Fe₃O₄ nanoparticles modified with ferrocene (Fe₃O₄@Fc) and gold nanoparticles coated with β-cyclodextrin (Au@CD). The self-assembly process between these two kinds of nanoparticles was extremely fast, and the self-assembled Fe₃O₄@Au nanoparticles showed high catalytic activity for the reduction of 4-nitrophenol. Fe₃O₄@Au nanoparticles demonstrated good magnetic recoverability and high conversion (>98%) after 10 successive cycles. The stable uniform distribution of gold nanoparticles on the surface of Fe₃O₄ played an important role in the enhancing catalytic activity. Meanwhile, β-cyclodextrin promoted the catalytic performance since it could tether the 4-nitrophenol to the gold nanoparticles. Furthermore, this self-assembly system exhibited good store stability even for 6 months and could be controllably redox-responsive disassembled. This facile self-assembly method could serve as inspiration in catalysis, biosensor, bioseparation, SERS detection, and so on.

中文翻译：

宿主与客体的相互作用诱导了具有高催化活性的快速自组装的Fe ₃ O ₄ @Au纳米颗粒

二茂铁与β-环糊精之间的客体相互作用成功诱导了新型Fe ₃ O ₄ @Au纳米催化剂的自组装。该自组装系统由用二茂铁改性的Fe ₃ O ₄纳米颗粒（Fe ₃ O ₄ @Fc）和涂有β-环糊精的金纳米颗粒（Au @ CD）组成。这两种纳米颗粒之间的自组装过程非常快，并且自组装的Fe ₃ O ₄ @Au纳米颗粒对4-硝基苯酚的还原具有很高的催化活性。铁₃ O ₄在连续10个循环后，@ Au纳米颗粒表现出良好的磁性恢复性和高转化率（> 98％）。Fe ₃ O ₄表面金纳米颗粒的稳定均匀分布在增强催化活性方面起着重要作用。同时，由于β-环糊精可以将4-硝基苯酚束缚在金纳米颗粒上，因此促进了催化性能。此外，这种自组装系统即使在6个月内仍显示出良好的存储稳定性，并且可以控制氧化还原响应性进行拆卸。这种简便的自组装方法可为催化，生物传感器，生物分离，SERS检测等提供启发。

更新日期：2018-05-25

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