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Chemical, structural, and morphological characterization of tungsten nanoparticles synthesized by a facile chemical route

机译:通过简便的化学路线合成的钨纳米粒子的化学,结构和形态表征

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摘要

Tungsten nanoparticles (W-NPs) with average sizes ranging between 30 and 80 nm were prepared by thermolytic decomposition of tungsten hexacarbonyl in presence of a mixture of surfactants, oleic acid and oleyl amine. Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy (XPS) results reveal that the surfactants oleic acid and oleyl amine bonded to the surface of W-NP through their functional groups, which in turn render stability to the nanopowders with respect to coarsening or aggregation. XPS results also confirm that carbon is present only at the surface of the W-NPs. The as-synthesized W-NPs were amorphous, and on heat treatment at 600 °C for 1 h, the amorphous powders transform into a body-centered cubic crystalline form (α-W).
机译:在表面活性剂,油酸和油胺的混合物存在下,通过热分解六羰基钨来制备平均粒径在30到80 nm之间的钨纳米颗粒(W-NPs)。傅里叶变换红外光谱和X射线光电子能谱(XPS)结果表明,表面活性剂油酸和油胺通过其官能团键合到W-NP的表面,从而使纳米粉在粗化或聚集方面具有稳定性。 。 XPS结果还证实碳仅存在于W-NP的表面。合成后的W-NP为非晶态,在600°C热处理1 h后,非晶态粉末转变为以体心为中心的立方晶型(α-W)。

著录项

  • 来源
    《Journal of Materials Research》 |2011年第5期|p.652-657|共6页
  • 作者单位

    Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad 500 058, India;

    Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad 500 058, India;

    Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad 500 058, India;

    Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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