Karbon Mikro Porous Berbahan Dasar Biomassa sebagai Penyerap Gelombang Mikro

Auliyah, Fauziyah (2022) Karbon Mikro Porous Berbahan Dasar Biomassa sebagai Penyerap Gelombang Mikro. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Karbon berpori dari biomassa telah menjadi bahan penyerap gelombang mikro baru karena kepadatan nya yang sangat rendah, kemampuan kehilangan dielektrik yang tinggi dan ramah lingkungan. Dalam penelitian ini, dibuat karbon berpori dari biomassa dengan bahan dasar kayu asam jawa, mahoni, jati dan tempurung kelapa dengan metode karbonisasi pada suhu 600°C selama 45 menit. Hasil pengujian menggunakan alat FTIR dan XRD menunjukkan bahwa sampel berupa karbon dengan fasa reduce graphene oxide dan impuritas KCl. Hasil pengujian menggunakan alat SEM dan PSA menunjukkan sampel memiliki bentuk yang berpori dengan ukuran mikro. Hasil pengujian dengan lata UV-Vis dan LCR meter menunjukkan bahwa sampel termasuk dalam material semikonduktor. Nilai rugi refleksi pada karakterisasi penyerap gelombang mikro divariasi pada ketebalan 1;1,5 dan 2 mm dengan nilai optimum diketebalan 2 mm. Secara berurutan nilai rugi refleksi karbon kayu asam jawa, mahoni, jati dan tempurung kelapa yaitu -24,28 (93,89%); -27,22 (95,64%); -30,56 (97,03%) dan -34,47 (98,11%) dB pada frekuensi 10,42; 10,33; 10,24 dan 10,05 GHz. Hasil penelitian menunjukkan bahwa sintesis dari bahan biomassa yang digunakan menghasilkan karbon mikro berpori yang dapat menyerap gelombang mikro.
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Porous carbon from biomass has become a new microwave absorbent
material due to its very low density, high dielectric loss ability and environmental
friendliness. In this study, porous carbon was made from biomass with the basic
ingredients of tamarind wood, mahogany, teak, and coconut shell by carbonization
method at 600°C for 45 minutes. The test results using FTIR and XRD showed that
the sample was carbon with reduced graphene oxide phase and KCl impurities. The
test results using SEM and PSA showed that the sample had a porous shape with
micro size. The test results with UV-Vis lata and LCR meter show that the sample
is a semiconductor material. The value of reflection loss on the characterization of
the microwave absorber was varied at a thickness of 1; 1.5 and 2 mm with the
optimum value at a thickness of 2 mm. Sequentially the carbon reflection loss
values for tamarind, mahogany, teak, and coconut shells are -24.28 (93.89%); -
27.22 (95.64%); -30.56 (97.03%) and -34.47 (98.11%) dB at a frequency of 10.42;
10.33; 10.24 and 10.05 GHz. The results showed that the synthesis of the biomass
material used produced microporous carbon that could absorb microwaves.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	radar absorbing material, biomassa, reduced graphene oxide, rugi refleksi, biomass, reduced graphene oxide, reflection loss
Subjects:	Q Science Q Science > QC Physics Q Science > QC Physics > QC162 Adsorption and absorption Q Science > QC Physics > QC610.3 Electric conductivity
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis
Depositing User:	Fauziyah auliyah
Date Deposited:	10 Feb 2022 01:13
Last Modified:	31 Oct 2022 02:10
URI:	http://repository.its.ac.id/id/eprint/93477

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