Microwave Absorption Performance of La0.7Sr0.3MnO3/AC Composite Material Based on Activated Carbon from Gnetum gnemon Seed Shell
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Keywords:
Microwave absorber, composite, La0.7Sr0.3MnO3/AC, biomass-based activated carbon, melinjo seed shell
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Abstract
The 5G internet network has been proven to facilitate daily life for people and render electronic devices such as smartphones as an integral component of people's daily routine. However, in conjunction with the ease of use, there is an issue of electromagnetic radiation. To cope with this issue, magnetic and dielectric composite microwave absorber materials have been undertaken. To address this, we investigated the limitations of activated carbon composite material from Gnetum gnemon seed shells (AC) on the microwave absorption ability of (La0.7Sr0.3MnO3)1-y/(AC)y. The composite material (La0.7Sr0.3MnO3)1-y/(AC)y (y = 0; 0.3; 0.5; 0.7) was synthesized through a stirring process with a 96% ethanol catalyst using La0.7Sr0.3MnO3 synthesized by sol-gel method and activated carbon material from Gnetum gnemon seed shell (AC) synthesized by chemical activation method. The XRD and SEM characterizations indicated a single-phase structure, with smaller crystals and particles that were uniformly distributed throughout the composite sample. The presence of activated carbon grains from Gnetum gnemon seed shells (AC) were observed between the La0.7Sr0.3MnO3 grains in the composite sample. The EDS results confirmed the material’s purity. VNA characterization demonstrated that (La0.7Sr0.3MnO3)1-y/(AC)y was capable of producing two reflection loss troughs with the largest absorption percentages recorded at 82.99% and 85.82% respectively within the frequency range of 8 – 12 GHz. This research highlights the significance of controlled composite composition in enhancing microwave absorption capability, particularly in perovskite-based composites with biomass-activated carbon, which holds a considerable promise for applications in electromagnetic wave attenuation and absorption technologies.
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Priambodo, D. P., Saptari, S. A., Tjahjono, A., Manawan, M. T., Taryana, Y., Hadiyawarman, & Admi, R. I. (2025). Microwave Absorption Performance of La0.7Sr0.3MnO3/AC Composite Material Based on Activated Carbon from Gnetum gnemon Seed Shell. Communications in Science and Technology, 10(2), 248–256. https://doi.org/10.21924/cst.10.2.2025.1727
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References
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29. H. Wang et al., “Biomass carbon derived from pine nut shells decorated with NiO nanoflakes for enhanced microwave absorption properties,” RSC Adv, vol. 9, no. 16, pp. 9126–9135, 2019.
30. H. Guan et al., “Microwave absorption performance of Ni(OH)2 decorating biomass carbon composites from Jackfruit peel,” Appl Surf Sci, vol. 447, pp. 261–268, Jul. 2018.
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34. R. Martínez, E. Cruz, S. Zografos, J. Soto, R. Palai, and C. Cabrera, Integrating perovskite materials and bamboo-based activated carbon for electrochemical energy storage in hybrid supercapacitors, J Energy Storage. 81 (2024) 110527.
35. A. R. Heiba, M. M. Omran, R. M. Abou Shahba, A. S. Dhmees, F. A.Taher, and E. El Sawy, Compositing LaSrMnO3 perovskite and graphene oxide nanoribbons for highly stable asymmetric electrochemical supercapacitors, Mater Sci Energy Technol. 8 (2025) 82–95.
36. M. Doumeng et al., A comparative study of the crystallinity of polyetheretherketone by using density, DSC, XRD, and Raman
spectroscopy techniques, Polym Test. 93 (2021) 106878.
37. C. F. Holder and R. E. Schaak, “Tutorial on Powder X-ray Diffraction for Characterizing Nanoscale Materials,” Jul. 23, 2019, American Chemical Society.
38. H. Li, Synthesis of CMR manganites and ordering phenomena in complex transition metal oxides, vol. 4. Jülich: Forschungszentrum Jülich, 2008.
39. S. A. Saptari, J. Q. Syarifuddin, A. Tjahjono, H. Hadiyawarman, and G. E. Timuda, “Enhancement of microwave absorption ability of Nd0.67Sr0.33Mn1-xNix/2Tix/2O3 (x?=?0, 0.03, and 0.06),” Emergent Mater, vol. 7, no. 6, pp. 2877–2890, Dec. 2024.
40. Z. J. Razi, S. A. Sebt, and A. Khajehnezhad, “Magnetoresistance temperature dependence of LSMO and LBMO perovskite manganites,” Journal of Theoretical and Applied Physics, vol. 12, no. 4, pp. 243–248, Dec. 2018.
41. U. Ulusoy, “A Review of Particle Shape Effects on Material Properties for Various Engineering Applications: From Macro to Nanoscale,” Jan. 01, 2023.
42. C. T. Rueden et al., “ImageJ2: ImageJ for the next generation of scientific image data,” BMC Bioinformatics, vol. 18, no. 1, Nov. 2017.
43. S. Goel, A. Garg, H. B. Baskey, M. K. Pandey, and S. Tyagi, “Studies on dielectric and magnetic properties of barium hexaferrite and bio-waste derived activated carbon composites for X-band microwave absorption,” J Alloys Compd, vol. 875, Sep. 2021.
44. Y. Akinay, U. Gunes, B. Çolak, and T. Cetin, “Recent progress of electromagnetic wave absorbers: A systematic review and bibliometric approach,” ChemPhysMater, vol. 2, no. 3, pp. 197–206, 2023.
45. F. A. Kurniawan, S. A. Saptari, A. Tjahjono, and D. S. Khaerudini, “Analysis Perovskite Material Absorber Based on Nd0.6Sr0.4MnxFe1/2(1-x)Ti1/2(1-x)O3 (x = 0, 0.1, 0.2) by Sol-Gel Method,” Journal of Physics: Theories and Applications, vol. 6, no. 1, p. 55, Mar. 2022.
46. X. Yang et al., MOFs-Derived Three-Phase Microspheres: Morphology Preservation and Electromagnetic Wave Absorption, Molecules. 27 (2022) 15.
47. K. Yusro and M. Zainuri, Karakterisasi Material Penyerap Gelombang Radar Berbahan Dasar Karbon Aktif Kulit Singkong dan Barium M-Heksaferit, Jurnal Sains dan Seni ITS. 4 (2015) 1–4.
48. Z. Qu et al., “Enhanced electromagnetic wave absorption properties of ultrathin MnO2 nanosheet-decorated spherical flower-shaped carbonyl iron powder,” Molecules, vol. 27, no. 1, Jan. 2022.