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首页> 外文期刊>RSC Advances >Hollow microtubes made of carbon, boron and gold: novel semiconducting nanocomposite material for applications in electrochemistry and temperature sensing
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Hollow microtubes made of carbon, boron and gold: novel semiconducting nanocomposite material for applications in electrochemistry and temperature sensing

机译：由碳，硼和金制成的空心微管：用于电化学和温度传感的应用新型半导体纳米复合材料

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摘要

Carbon based nanocomposites have recently been intensively investigated as a new class of functional hybrid materials. Here, we present a procedure to obtain a new nanocomposite material made of carbon, boron and gold for applications in electrochemistry and electronics. The presented fabrication protocol uses cellulose fibers as a template that is first modified with an inorganic nanocomposite material consisting of gold nanoparticles (AuNPs) embedded in a polyoxoborate matrix, and then is subjected to the process of thermal decomposition. The as obtained material has a form of tubes with a diameter of a couple of micrometers that are composed of carbonized cellulose coated with the polyoxoborate-AuNP nanocomposite. This inorganic shell, which covers the outer surface of the carbon microtubes, serves as a scaffold that makes the structure stable. The obtained material exhibits electrical properties of a semiconductor with the width of the band gap of about 0.6 eV, and forms Schottky contact with a metal electrode. We show that the new material is suitable for preparation of the NCT-type thermistor. We also demonstrate application of the new nanocomposite in electrochemistry for modification of the surface of a working electrode. Experiments carried out with three exemplary redox probes show that the electrochemical performance of the modified electrode depends greatly on the amount of AuNPs in the nanocomposite.
机译：最近已被碳基纳米复合材料被强烈研究为新类功能杂化材料。在此，我们提出了一种方法，以获得由碳，硼和金制成的新型纳米复合材料，用于电化学和电子产品中的应用。所提出的制造协议使用纤维素纤维作为模板，其首先用嵌入在聚氧化氢基质中的金纳米颗粒（AUNP）组成的无机纳米复合材料，然后进行热分解的过程。如所得材料具有一种管的直径，其直径由涂覆有聚氧化硼酸盐纳米复合材料的碳化纤维素组成。覆盖碳微管的外表面的这种无机壳用作使结构稳定的支架。所获得的材料表现出半导体的电性质，该半导体具有约0.6eV的带隙的宽度，并与金属电极形成肖特基接触。我们表明新材料适用于准备NCT型热敏电阻。我们还证明了新型纳米复合材料在电化学中的应用，以改变工作电极的表面。用三个示例性氧化还原探针进行的实验表明，改性电极的电化学性能大大取决于纳米复合材料中的剖腹量的量。

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  • 来源
    《RSC Advances》 |2015年第79期|共8页
  • 作者

    Paczesny J.; Wybranska K.; Niedziolka-Joensson J.; Rozniecka E.; Wadowska M.; Zawal P.; Malka I.; Dziecielewski I.; Prochowicz D.; Holyst R.; Fialkowski M.;

  • 作者单位

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    UNIPRESS PAS Inst High Pressure Phys PL-01142 Warsaw Poland;

    UNIPRESS PAS Inst High Pressure Phys PL-01142 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

    Polish Acad Sci Inst Phys Chem PL-01224 Warsaw Poland;

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  • 正文语种 eng
  • 中图分类 化学;
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