Sintesis Nanokristal Fe2O3 dari Pasir Besi Menggunakan Kopresipitator dengan Variasi Suhu Kalsinasi

Meutuah, Sari Ramadhani (2025) Sintesis Nanokristal Fe2O3 dari Pasir Besi Menggunakan Kopresipitator dengan Variasi Suhu Kalsinasi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pasir besi sangat melimpah di alam. Di Indonesia, pasir besi dapat ditemukan di pesisir pantai sebagai bahan bangunan namun belum dimanfaatkan secara maksimal. Pasir besi dapat disintesis menjadi ukuran yang sangat kecil (nano) dan dimanfaatkan dalam berbagai macam bidang yang lebih luas seperti biomedis, industri, dll. Sintesis pasir besi dapat membentuk hasil jadi serbuk nanokristal Fe2O3 dengan menggunakan berbagai macam metode seperti metode kopresipitasi dan dilanjutkan dengan kalsinasi. Sintesis nanokristal Fe2O3 pada penelitian ini dilakukan dengan menggunakan alat kopresipitator semi otomatik untuk pelarutan asam-basa hingga membentuk serbuk Fe3O4 dan dikalsinasi hingga membentuk serbuk Fe2O3. Setelah mendapatkan serbuk Fe2O3, dilakukan pengujian untuk mengetahui karakterisasi dari hasil sintesis menggunakan uji X-ray powder diffraction (XRD) dan Scanning Electron Microscopy - Energy Dispersive of X-Ray Spectroscopy (SEM-EDS). Hasil analisis kuantitatif dari hasil uji XRD menunjukkan bahwa Fe2O3 dapat terbentuk pada laju pengadukan 900 dan 1000 RPM dan suhu kalsinasi 600, 800, dan 1000°C dengan struktur heksagonal serta memiliki komposisi fasa dengan rentang 70-99%wt. Hasil SEM-EDS menunjukkan morfologi Fe2O3 memiliki bentuk yang tidak beraturan dengan kandungan Fe sebesar 45 dan 51% dan kandungan O sebesar 37 dan 36%. Selain itu, ukuran partikel setelah dianalisis yaitu sebesar 1654.142 nm pada laju pengadukan 1000 RPM serta suhu 800°C dan 1196.477 nm pada laju pengadukan 900 RPM serta suhu 800°C.
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Iron sand is very abundant in nature. In Indonesia, iron sand can be found on the coast as a building material but has not been used optimally. Iron sand can be synthesized into very small sizes (nano) and used in a wider variety of fields such as biomedical, industrial, etc. Synthesis of iron sand can form the finished product of Fe2O3 nanocrystal by using various methods such as coprecipitation method and followed by calcination. The synthesis of Fe2O3 nanocrystal in this study was carried out using a semi-automatic co-precipitator for acid-base dissolution to form Fe3O4 powder and calcined to form Fe2O3 powder. After obtaining Fe2O3 nanocrystal, testing was carried out to determine the characterization of the synthesis results using X-ray powder diffraction (XRD) and Scanning Electron Microscopy - Energy Dispersive of X-Ray Spectroscopy (SEM-EDS). The results of the quantitative analysis of the XRD test results show that the phases formed at temperatures of 600 and 800°C are hexagonal Fe2O3 with a phase composition of 99% and at 1000°C several phases are formed, namely hexagonal Fe2O3, TiO2 (brookite phase) at a stirring rate of 1000 RPM, and Fe2TiO5 at a stirring rate of 900 RPM. The results of the phase composition showed that the Fe2O3 content was 95% at a stirring rate of 1000 RPM and 70% at a stirring rate of 900 RPM. The SEM-EDS results show that the morphology of Fe2O3 has an irregular shape with Fe content of 39 and 44% and O content of 31 and 33%. In addition, the particle size after analysis was 1654,142 nm at a stirring rate of 1000 RPM and a temperature of 800°C and at a stirring rate of 900 RPM and a temperature of 800°C of 1196,477 nm.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Pasir Besi, Fe2O3, Nanokristal Laju Pengadukan, Sintesis, Iron Sand, Fe2O3, Nanocrystal, Stirring Rate, Synthesis
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN408.N56 Sand, Iron
Divisions:	Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	30 Sep 2025 05:58
Last Modified:	30 Sep 2025 05:58
URI:	http://repository.its.ac.id/id/eprint/128485

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