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首页> 外文期刊>Journal of materials science >Preparation, microstructure, electromagnetic property and microwave absorption property of MoS_2 nanopowder by hydrothermal method at various reaction temperatures
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Preparation, microstructure, electromagnetic property and microwave absorption property of MoS_2 nanopowder by hydrothermal method at various reaction temperatures

机译：水热法在不同反应温度下制备MoS_2纳米粉的结构，微观结构，电磁性能和吸波性能

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摘要

AbstractMolybdenum disulfide (MoS2) nanopowders have been synthesized by a hydrothermal method at various reaction temperature using sodium molybdate (Na2MoO4⋅2H2O) and thioacetamide (CH3CSNH2) as the sulfur source and reducing agent, respectively. The phase composition, microstructure, electromagnetic property and microwave absorption properties of prepared MoS2nanopowders have been characterized by XRD, SEM, TEM, XPS and vector network analyzer, respectively. Results show that the prepared MoS2samples were spherical and the powder size increased with increasing reaction temperature. The real part (ε′) and imaginary part (ε″) of permittivity of prepared MoS2nanopowders increased initially and decreased afterwards when the reaction temperature increased. When the reaction temperature was 200 °C, the ε′ and ε″ reached the maximum values, 8.25–8.05 and 4.1–3.85. The minimum reflection loss (RLmin) of MoS2nanopowder synthesized at 160 °C reached − 54.72 dB at 9.1 GHz with a matching thickness of 3.5 mm. All the samples presented the wider effective absorption bandwidths (RL < − 10 dB) in the frequency range of 8.2–12.4 GHz (X-band).
机译：通过水热法合成了 摘要 二硫化钼（MoS 2 ）纳米粉。使用钼酸钠（Na 2 MoO 4 ⋅2H 2 O）和硫代乙酰胺（CH 3 CSNH 2 ）作为硫源和还原剂。分别用XRD，SEM，TEM，XPS和矢量网络分析仪对制备的MoS 2 纳米粉的相组成，微观结构，电磁性能和微波吸收性能进行了表征。结果表明，制备的MoS 2 样品呈球形，且随着反应温度的升高，粉末的粒径增大。制备的MoS 2 纳米粉体的介电常数的实部（ε'）和虚部（ε”）随着反应温度的升高先增加后减少。当反应温度为200°C时，ε'和ε''达到最大值8.25–8.05和4.1–3.85。 MoS 2 纳米粉在160°C合成的最小反射损耗（RL min ）在9.1 GHz时达到−54.72 dB，匹配厚度为3.5mm。所有样本在8.2-12.4 GHz（X波段）的频率范围内均表现出更宽的有效吸收带宽（RL <-10 dB）。

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  • 来源
    《Journal of materials science》 |2018年第5期|4020-4029|共10页
  • 作者

    Xiaolei Su; Du Wang; Qiang Yan; Xuezhong Guo; Shaofeng Fang; Yi Liu;

  • 作者单位

    College of Mechanical & Electronic Engineering, Xi’an Polytechnic University;

    College of Mechanical & Electronic Engineering, Xi’an Polytechnic University;

    Changqing Oilfield Company Gas Production Plant No. 1;

    Project Management Team in Sulige Gas Field of Xibu Drilling Engineering Co. Ltd.;

    Project Management Team in Sulige Gas Field of Xibu Drilling Engineering Co. Ltd.;

    College of Mechanical & Electronic Engineering, Xi’an Polytechnic University;

  • 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
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