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<p>In this study, MoS<sub>2</sub> and MoS<sub>2</sub>-rGO nanocomposites were synthesized using a one-pot hydrothermal method. The morphology and structure of the composites were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), while their electrical properties were investigated through dielectric behavior and AC conductivity measurements. Raman spectroscopy confirmed strong interactions between MoS<sub>2</sub> and rGO. SEM analysis revealed sheet-like morphology, and EDX mapping confirmed the presence of C, Mo, and S elements. Dielectric measurements showed a decrease in dielectric constant and loss with increasing frequency, with nearly constant values at higher frequencies, while dielectric properties increased with doping concentration. AC conductivity increased with both frequency and doping concentration. The frequency exponent S &lt; 1 indicated that the dominant charge transport mechanism was hopping conduction to be observed in all samples. The I–V characteristics confirm the ohmic nature of all synthesized samples.</p>

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Structural and dielectric properties of low-doped reduced graphene oxide-molybdenum disulfide (MoS₂-rGO) nanocomposites

  • 期刊论文

  • 发表日期：

    2025年8月13日

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  • Cong Lei,
  • Sohail Ahmad,
  • Karam Jabbour,
  • Majid Niaz Akhtar,
  • Tayba Chudhary,
  • Hassan Ali,
  • Aboud Ahmed Awadh Bahajjaj

摘要

In this study, MoS2 and MoS2-rGO nanocomposites were synthesized using a one-pot hydrothermal method. The morphology and structure of the composites were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), while their electrical properties were investigated through dielectric behavior and AC conductivity measurements. Raman spectroscopy confirmed strong interactions between MoS2 and rGO. SEM analysis revealed sheet-like morphology, and EDX mapping confirmed the presence of C, Mo, and S elements. Dielectric measurements showed a decrease in dielectric constant and loss with increasing frequency, with nearly constant values at higher frequencies, while dielectric properties increased with doping concentration. AC conductivity increased with both frequency and doping concentration. The frequency exponent S < 1 indicated that the dominant charge transport mechanism was hopping conduction to be observed in all samples. The I–V characteristics confirm the ohmic nature of all synthesized samples.