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首页> 外文期刊>Green chemistry >Synthesis of a morphology controllable Fe3O4 nanopartlcle/hydrogel magnetic nanocomposite inspired by magnetotactic bacteria and its application in H2O2 detection
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Synthesis of a morphology controllable Fe3O4 nanopartlcle/hydrogel magnetic nanocomposite inspired by magnetotactic bacteria and its application in H2O2 detection

机译：趋磁细菌激发的形貌可控的Fe3O4纳米颗粒/水凝胶磁性纳米复合材料的合成及其在H2O2检测中的应用

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摘要

Owing to the shape-dependent catalytic activity of Fe3O4 nanoparticles, controlling their morphology is of great significance. In this work, we propose a simple, nontoxic, water-based strategy for the fabrication of magnetic nanoparticle/hydrogel nanocomposites in which highly crystalline Fe3O4 nanooctahedra can be fabricated in situ within a negatively charged hydrogel matrix. The morphology of the Fe3O4 nano-crystals can be easily tuned by adjusting the crosslinking concentration of the hydrogel. Furthermore, the catalytic activities of the magnetic nanocomposites were studied, and the magnetic nanocomposite loaded with Fe3O4 nanooctahedra exhibited excellent catalytic activity and provided a sensitive response toward H2O2 detection. This scalable approach for the fabrication of magnetic nanocomposites, loaded with morphology controllable Fe3O4 nanoparticles, potentially promotes their applications in biotechnology and environmental chemistry.
机译：由于Fe 3 O 4纳米颗粒的形状依赖性催化活性，控制其形态具有重要意义。在这项工作中，我们提出了一种简单，无毒，基于水的磁性纳米颗粒/水凝胶纳米复合材料的制备策略，其中可以在带负电荷的水凝胶基质中原位制备高结晶度的Fe3O4纳米八面体。通过调节水凝胶的交联浓度，可以轻松地调节Fe3O4纳米晶体的形貌。此外，研究了磁性纳米复合材料的催化活性，负载了Fe3O4纳米八面体的磁性纳米复合材料表现出优异的催化活性，并且对H2O2的检测提供了灵敏的响应。这种可扩展的制造磁性纳米复合材料的方法，并加载了形态可控的Fe3O4纳米颗粒，有可能促进其在生物技术和环境化学中的应用。

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