The performance of radar absorption of MnxFe3–xO4/rGO nanocomposites prepared from iron sand beach and coconut shell waste

Yana Fajar Prakasa; Sumari Sumari; Aman Santoso; Muhammad Roy Asrori; Ririn Cahyanti; Yana Fajar Prakasa; Sumari Sumari; Aman Santoso; Muhammad Roy Asrori; Ririn Cahyanti

doi:10.3934/matersci.2023013

AIMS Materials Science

2023, Volume 10, Issue 2: 227-248. doi: 10.3934/matersci.2023013

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Research article Topical Sections

The performance of radar absorption of Mn_xFe_3–xO₄/rGO nanocomposites prepared from iron sand beach and coconut shell waste

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia

Received: 30 July 2022 Revised: 18 November 2022 Accepted: 07 December 2022 Published: 07 February 2023

In this work, the Fe₃O₄ nanoparticles from natural iron sand were doped with Mn and combined with reduced-graphene oxide (rGO) to obtain Mn_xFe_3–xO₄/rGO nanocomposites with mole fraction variations of the Mn of 0.25, 0.5, and 0.75. The crystalline phase of the synthesized Mn_xFe_3–xO₄/rGO nanocomposites formed an amorphous phase. The presence of rGO was observed through EDX results. The magnetical properties of Mn_xFe_3–xO₄/rGO nanocomposites were shown by decreasing the Br, H_cJ, H_max along with increasing of Mn doping. Interestingly, increasing rGO and Mn composition made the absorption bandwidth of the Mn_xFe_3–xO₄/rGO nanocomposites wider, so that the radar absorption also increased marking by the greater reflection loss that reached −11.95 dB. The increase in the radar absorption performance of Mn_xFe_3–xO₄/rGO nanocomposites came from the efficient complementarity between dielectric loss and magnetic loss and interfacial polarization between Fe₃O₄ doped Mn and rGO.
- Mn_xFe_3–xO₄/rGO,
- iron sand,
- coconut shell waste,
- radar absorbing material,
- simple co-precipitation method
Citation: Yana Fajar Prakasa, Sumari Sumari, Aman Santoso, Muhammad Roy Asrori, Ririn Cahyanti. The performance of radar absorption of MnxFe3–xO4/rGO nanocomposites prepared from iron sand beach and coconut shell waste[J]. AIMS Materials Science, 2023, 10(2): 227-248. doi: 10.3934/matersci.2023013

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Abstract

In this work, the Fe₃O₄ nanoparticles from natural iron sand were doped with Mn and combined with reduced-graphene oxide (rGO) to obtain Mn_xFe_3–xO₄/rGO nanocomposites with mole fraction variations of the Mn of 0.25, 0.5, and 0.75. The crystalline phase of the synthesized Mn_xFe_3–xO₄/rGO nanocomposites formed an amorphous phase. The presence of rGO was observed through EDX results. The magnetical properties of Mn_xFe_3–xO₄/rGO nanocomposites were shown by decreasing the Br, H_cJ, H_max along with increasing of Mn doping. Interestingly, increasing rGO and Mn composition made the absorption bandwidth of the Mn_xFe_3–xO₄/rGO nanocomposites wider, so that the radar absorption also increased marking by the greater reflection loss that reached −11.95 dB. The increase in the radar absorption performance of Mn_xFe_3–xO₄/rGO nanocomposites came from the efficient complementarity between dielectric loss and magnetic loss and interfacial polarization between Fe₃O₄ doped Mn and rGO.

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