Inovasi Fisika Indonesia (IFI)
Vol. 14 No. 2 (2025): Vol 14 No 2

SINTESIS DAN KARAKTERISASI REDUCED GRAPHENE OXIDE DARI CANGKANG SAWIT TERMODIFIKASI SILIKA

ali, Mohamad Fikri Aliansah (Unknown)
Munasir, Munasir (Unknown)



Article Info

Publish Date
30 Sep 2025

Abstract

Abstrak Penelitian ini melaporkan hasil sintesis reduced graphene oxide (rGO) yang dimodifikasi silika (SiO₂) dari bahan alam; rGO dibuat dari cangkang inti sawit menggunakan metode hummer kemudian dilapisi dengan SiO₂ dari prekursor TEOS menggunakan metode sol-gel dan direduksi menggunakan metode hidrotermal-hidrazin. Analisis XRD menunjukkan bahwa rGO cangkang inti sawit yang dimodifikasi SiO₂ menunjukkan pergeseran kisi yang disebabkan oleh penjangkaran SiO₂ pada struktur grafen yang konsisten dengan hasil SEM/EDX. Pengamatan FTIR menunjukkan bahwa SiO₂ telah terbentuk pada rGO dengan adanya gugus Si-O-C dan Si-OH serta reduksi gugus OH yang menunjukkan bahwa proses modifikasi rGO terjadi melalui ikatan hidrogen. Pada pengamatan konduktivitas sampel, sampel rGO memiliki konduktivitas sebesar 23,65x10⁻² S/m sedangkan sampel rGO@SiO₂ memiliki konduktivitas sebesar 16,71x10⁻² S/m dimana terjadi penurunan konduktivitas yang disebabkan oleh sifat intrinsik SiO₂ yang bersifat sangat isolator.   Abstract This work reports the results of the synthesis of silica (SiO₂)-modified reduced graphene oxide (rGO) from natural materials; rGO was made from palm kernel shells using the hummer method then coated with SiO₂ from TEOS precursor using the sol-gel method and reduced using hydrothermal-hydrazine. XRD analysis showed that SiO₂-modified palm kernel shell rGO exhibited rid shift caused by SiO₂ anchoring on the graphene structure which was consistent with the SEM/EDX results. FTIR observations showed that SiO₂ had formed on rGO with the presence of Si-O-C and Si-OH groups and a reduction in OH groups indicating that the rGO modification process was through hydrogen bonds. In the observation of sample conductivity, the rGO sample had a conductivity of 23.65x10⁻² S/m while the rGO@SiO₂ sample had a conductivity of 16.71x10⁻² S/m where there was a decrease in conductivity caused by the intrinsic nature of SiO₂ which was very insulating.

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Journal Info

Abbrev

inovasi-fisika-indonesia

Publisher

Subject

Earth & Planetary Sciences Electrical & Electronics Engineering Materials Science & Nanotechnology Physics

Description

Jurnal Inovasi Fisika Indonesia(IFI) is a peer-reviewed journal, ISSN: 2302-4216, which is managed and published by the Department of Physics, Faculty of Mathematics and Natural Sciences (FMIPA) Universitas Negeri Surabaya (UNESA). This journal is accessible to all readers and covers developments ...