Sintesis Nanopartikel Fe3o4 Dengan Metode Kopresipitasi Menggunakan Tmah Sebagai Surfaktan

Sari, Yuliani Purnama (2019) Sintesis Nanopartikel Fe3o4 Dengan Metode Kopresipitasi Menggunakan Tmah Sebagai Surfaktan. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sintesis nanopartikel Fe3O4 dengan variasi TMAH telah dilakukan menggunakan metode kopresipitasi. Batu besi Kalimantan Selatan merupakan sumber Fe yang digunakan, sedangkan sumber TMAH adalah TMAH komersial. Sintesis dilakukan dengan menggunakan variasi TMAH, yaitu batu besi (dalam g): TMAH (dalam ml): rasio 1: 0, 1: 1, 1: 2, 1: 3. Presipitat diperoleh melalui pemurnian batu besi dengan metode kopresipitasi untuk menghasilkan ferofluida Fe3O4 sebelum penambahan TMAH. Kemudian campuran dikeringkan pada temperatur 150 °C untuk mendapatkan serbuk nano. Serbuk dikarakterisasi menggunakan Synchrotron Ray Diffraction (SRD), Fourier Transform Infra Red (FTIR), Vibrating Sample Magnetometer (VSM), dan High Resolution Transmission Electron Microscopy (HRTEM). Analisis data SRD dan FTIR menunjukkan bahwa terbentuk fasa tunggal Fe3O4 untuk semua variasi TMAH. Berdasarkan pengamatan HRTEM, morfologi nanopartikel Fe3O4 tidak berubah dengan penambahan TMAH, sedangkan distribusi ukurannya lebih homogen. Sementara itu, hasil analisis VSM menunjukkan bahwa nanopartikel Fe3O4 termasuk bahan soft magnetik dan memiliki sifat superparamagnetik.
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Synthesis of Fe3O4 nanoparticles with TMAH variations has been carried out using the coprecipitation method. South Kalimantan iron ore was used as the Fe source, while commercial TMAH served as the TMAH source. Synthesis was performed using various ratios of TMAH, specifically iron ore (in g) : TMAH (in mL) ratios of 1:0, 1:1, 1:2, and 1:3. The precipitate was obtained through the purification of iron ore via the coprecipitation method to yield Fe3O4 ferrofluid before the addition of TMAH. The mixture was then dried at a temperature of 150 °C to produce nanopowder. The powder was characterized using Synchrotron Ray Diffraction (SRD), Fourier Transform Infra Red (FTIR), Vibrating Sample Magnetometer (VSM), and High Resolution Transmission Electron Microscopy (HRTEM). Data analysis from SRD and FTIR showed that a single phase of Fe3O4 was formed for all TMAH variations. Based on HRTEM observations, the morphology of Fe3O4 nanoparticles did not change with the addition of TMAH, whereas the size distribution was more homogeneous. Meanwhile, the VSM analysis results indicated that the Fe3O4 nanoparticles belong to soft magnetic materials and exhibit superparamagnetic properties.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	kopresipitasi, nanopartikel Fe3O4, soft magnetic, supeparamagnetik, TMAH
Subjects:	Q Science > QC Physics > QC765 Magnetic materials
Divisions:	Faculty of Natural Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Yuliani Purnama Sari
Date Deposited:	20 Jul 2026 02:57
Last Modified:	20 Jul 2026 02:57
URI:	http://repository.its.ac.id/id/eprint/66050

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