Scholarlink

<p>This research has proven that Radar Absorbing Material (RAM) can be synthesized from natural materials by utilizing iron sand (Fe<sub>3</sub>O<sub>4</sub>) from volcanoes and coconut shell charcoal as sources of reduced graphene oxide (rGO). The PANI/rGO/Fe<sub>3</sub>O<sub>4</sub> with Fe<sub>3</sub>O<sub>4</sub> variation 0.5&#xa0;g (PrGF1); 0.6&#xa0;g (PrGF2); 0.7&#xa0;g (PrGF3) were synthesized through a combination of coprecipitation, hummer modification, and in-situ polymerization methods. Characterization was carried out using X-ray diffraction (XRD), scanning electron microscope with energy dispersive spectroscopy (SEM–EDS), electro impedance spectroscopy (EIS), vibrating sample magnetometer (VSM), and vector network analyzer (VNA) to determine the crystal structure, morphology, electrical properties, magnetic properties, and microwave absorption capabilities in the X-band frequency range (8–12&#xa0;GHz) respectively. The test results showed that increasing the Fe<sub>3</sub>O<sub>4</sub> content strengthened the magnetic properties and supported impedance matching through a balance between dielectric and magnetic losses. The best sample, PrGF3, showed a maximum reflection loss value of − 42.41&#xa0;dB at a frequency of 10.1&#xa0;GHz, with a reflection coefficient of 0.0075, meaning 99.25% of electromagnetic waves were successfully absorbed. This study confirms that the use of natural materials such as iron sand and coconut shell charcoal can produce RAM that is lightweight, environmentally friendly, and has competitive absorption performance for electromagnetic (EM) wave absorber applications. In addition, this study found that thin samples also have good absorbance values, and all composites have balanced dielectric and magnetic losses.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Development of natural-based radar absorbing material: polyaniline/reduced graphene oxide/Fe3O4 composite

  • 期刊论文

  • 发表日期：

    2026年1月6日

查看全文
  • Nugrahani Primary Putri,
  • Laili Arin Ramadhani,
  • Fitriana,
  • Diah Hari Kusumawati,
  • Munasir,
  • Yana Taryana,
  • Ahmed Shaban

摘要

This research has proven that Radar Absorbing Material (RAM) can be synthesized from natural materials by utilizing iron sand (Fe3O4) from volcanoes and coconut shell charcoal as sources of reduced graphene oxide (rGO). The PANI/rGO/Fe3O4 with Fe3O4 variation 0.5 g (PrGF1); 0.6 g (PrGF2); 0.7 g (PrGF3) were synthesized through a combination of coprecipitation, hummer modification, and in-situ polymerization methods. Characterization was carried out using X-ray diffraction (XRD), scanning electron microscope with energy dispersive spectroscopy (SEM–EDS), electro impedance spectroscopy (EIS), vibrating sample magnetometer (VSM), and vector network analyzer (VNA) to determine the crystal structure, morphology, electrical properties, magnetic properties, and microwave absorption capabilities in the X-band frequency range (8–12 GHz) respectively. The test results showed that increasing the Fe3O4 content strengthened the magnetic properties and supported impedance matching through a balance between dielectric and magnetic losses. The best sample, PrGF3, showed a maximum reflection loss value of − 42.41 dB at a frequency of 10.1 GHz, with a reflection coefficient of 0.0075, meaning 99.25% of electromagnetic waves were successfully absorbed. This study confirms that the use of natural materials such as iron sand and coconut shell charcoal can produce RAM that is lightweight, environmentally friendly, and has competitive absorption performance for electromagnetic (EM) wave absorber applications. In addition, this study found that thin samples also have good absorbance values, and all composites have balanced dielectric and magnetic losses.