Nickel-Decorated Fe3O4 Nanoparticles as Recyclable Magnetic Self-Stirring Nanocatalysts for Microreactions

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• 作者：Lin Miao ; Yi-Zhou Zhu ; He-Fang Wang
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2017
• 出版时间：February 6, 2017
• 年：2017
• 卷：5
• 期：2
• 页码：1864-1870
• 全文大小：512K
• ISSN：2168-0485

文摘

We presented the first exploration of the easily prepared nickel-decorated magnetic Fe₃O₄ nanoparticles as recyclable nanosized magnetic self-stirring catalysts for microdroplet reactions. The cross-linked polymer poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol) (PZS) was used as the intermediary to link Fe₃O₄ and anchored nickel nanodots. On the basis of the charming magnetic feathers of Fe₃O₄ and the fine catalysis activity of Ni, the Fe₃O₄@PZS-Ni nanoparticles could not only self-stir or make the reactants move along the tiny channels with the help of the external rotating magnetic field but also exhibit high catalysis activity and convenient recyclability. The Fe₃O₄@PZS-Ni nanoparticles have the merits of small size, good suspension, easy fabrication, and most importantly, superior flexibility and adaptability to any shape of the microreactors or nanoreactors; thus, they may bring new inspiration for self-stirring catalytic reactions in micro/nanochips or micro/nanobiological tubules or tissues.