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首页> 外文期刊>RSC Advances >Controlled deposition of Pt nanoparticles on Fe3O4@ carbon microspheres for efficient oxidation of 5-hydroxymethylfurfural
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Controlled deposition of Pt nanoparticles on Fe3O4@ carbon microspheres for efficient oxidation of 5-hydroxymethylfurfural

机译：在Fe3O4碳微球上受控沉积Pt纳米粒子，以有效氧化5-羟甲基糠醛

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摘要

2,5-Furandicarboxylic acid (FDCA) is an important environmentally benign and sustainable chemical which can be derived from biomass and produced by the oxidization of 5-hydroxymethylfurfural (HMF). However, the oxidation of HMF relies highly on catalysts to improve the yield of FDCA. In this study, a series of novel superparamagnetic Pt nanoparticle-containing catalysts with a core-shell structure (Fe3O4@C@Pt) were synthesized and applied for HMF oxidation. These novel spherical catalysts possess a Fe3O4 core and a protective amorphous carbon shell with a surface decorated by Pt nanoparticle clusters. By changing the synthesis temperature, the morphology of the active Pt species on the carbon shell of the microspheres can be transformed from highly dispersed nanoparticles to nanoparticle clusters. The catalytic HMF oxidation results reveal that microspheres decorated with larger nanoparticle clusters (110-Fe3O4@C@Pt) have the best catalytic activity for HMF oxidation, owing to a unique islet morphology coupled with the high-degree crystallization of Pt nanoparticles. The yield of FDCA could reach 100% after 4 h of reaction at 90 degrees C in water which is superior to previous reports. Furthermore, this catalyst can be reused at least three times without significant performance loss.
机译：2,5-呋喃羧酸（FDCA）是一种重要的环境良性和可持续化学品，可衍生自生物质并通过氧化5-羟甲基糠醛（HMF）产生。然而，HMF的氧化依赖于高度催化剂以提高FDCA的产率。在该研究中，合成了一系列具有核 - 壳结构（Fe3O4 @ Pt）的含有核 - 壳结构（Fe3O4 @ Pt）的含有含有核 - 壳结构的新型催化剂的催化剂并施加HMF氧化。这些新型球形催化剂具有Fe3O4核和保护性无定形碳壳，具有由Pt纳米颗粒簇装饰的表面。通过改变合成温度，可以从高度分散的纳米颗粒转化微球的碳壳上的活性Pt种类的形态。催化HMF氧化结果表明，由于具有与Pt纳米颗粒的高度结晶耦合的独特的胰岛形态，具有较大的纳米颗粒簇（110-Fe3O4 @ C @ Pt）具有最佳的HMF氧化催化活性的微球。在90℃的水中在水中的4小时后，FDCA的产量可以达到100％，其水中优于先前的报告。此外，该催化剂可以在没有显着性能损失的情况下重复使用至少三次。

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  • 来源
    《RSC Advances》 |2016年第56期|共9页
  • 作者

    Zhang Yuwei; Xue Zhimin; Wang Jinfang; Zhao Xinhui; Deng Yonghui; Zhao Wancheng; Mu Tiancheng;

  • 作者单位

    Renmin Univ China Dept Chem Beijing 100872 Peoples R China;

    Beijing Forestry Univ Coll Mat Sci &

    Technol Beijing Key Lab Lignocellulos Chem Beijing 100083 Peoples R China;

    Renmin Univ China Dept Chem Beijing 100872 Peoples R China;

    Renmin Univ China Dept Chem Beijing 100872 Peoples R China;

    Fudan Univ State Key Lab Mol Engn Polymers Shanghai Key Lab Mol Catalysis &

    Innovat Mat Dept Chem Shanghai 200433 Peoples R China;

    Renmin Univ China Dept Chem Beijing 100872 Peoples R China;

    Renmin Univ China Dept Chem Beijing 100872 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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