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首页> 外文期刊>Science of advanced materials >Controlled Synthesis of Magnetic Iron Oxide Nanoparticles Within a Supramolecular Organogel Fiber Network
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Controlled Synthesis of Magnetic Iron Oxide Nanoparticles Within a Supramolecular Organogel Fiber Network

机译：超分子有机凝胶纤维网络内磁性氧化铁纳米粒子的控制合成。

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摘要

A supramolecular organogel was formed by the gelation of N-lauroyl-L-glutamic acid di-n-butylamide (GP-1) in propylene glycol (PG) solvent, and then used as a template for the facile construction of magnetite nanoparticles at room temperature using NaOH or NH_3H_2O as the precipitating agent by a chemical co-precipitation method. Magnetic iron oxide nanoparticles with larger size, higher crystallinity and higher saturation magnetization could be obtained in GP-1/PG organogel when NaOH was used as a precipitating agent, while both hematite and magnetite/maghemite were synthesized using NH_3· H_2O as the precipitating agent. Here the supramolecular organogel induces different crystal formation and growth pathways through controlling diffusion rates of the different precipitating agents and OH~- concentrations in the gel network, which is attributed to the limited pore size of GP-1 fiber network as well as different interactions between various precipitators and the organogel.
机译：通过在丙二醇（PG）溶剂中凝胶化N-月桂酰-L-谷氨酸二正丁酰胺（GP-1）形成超分子有机凝胶，然后将其用作方便地在室温下构造磁铁矿纳米颗粒的模板NaOH或NH_3H_2O作为沉淀剂的化学共沉淀法。以NaOH为沉淀剂，GP-1 / PG有机凝胶可获得较大尺寸，较高结晶度和较高饱和磁化强度的磁性氧化铁纳米粒子，以NH_3·H_2O为沉淀剂合成赤铁矿和磁铁矿/磁铁矿。 。在这里，超分子有机凝胶通过控制不同沉淀剂的扩散速率和凝胶网络中的OH〜-浓度诱导不同的晶体形成和生长途径，这归因于GP-1纤维网络的孔径受限以及两者之间的相互作用各种沉淀剂和有机凝胶。

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  • 来源
    《Science of advanced materials》 |2013年第7期|822-829|共8页
  • 作者

    Liping Wang; Shaokun Tang; Hu Zhou;

  • 作者单位

    Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

    Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China,National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;

    Department of Biological Sciences, National University of Singapore, Singapore 117543;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Fe_3O_4; Nanoparticle; Organogel; GP-1; Co-Precipitation;

    机译：Fe_3O_4;纳米粒子有机凝胶GP-1;共沉淀;

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