Rizki Fitrianni, Sri (2023) Pengaruh Variasi Suhu Sintesis terhadap Sifat Kemagnetan dan Struktur Nanopartikel Magnetit (Fe3O4) untuk Aplikasi GMR Biosensor. S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.
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Abstract
Magnetite (Fe3O4) nanoparticles show good potential for application as magnetic labels for biomolecular detection using GMR sensors. In this study, magnetite (Fe3O4) nanoparticles have been successfully synthesized using the co-precipitation method. The synthesis was carried out at a stirring speed of 450 rpm within 90 minutes, and the reaction temperature was varied for each sample (40°C, 60°C, and 80°C). The purpose of this study was to determine the effect of different reaction temperatures on the characteristics of magnetite (Fe3O4) nanoparticles for GMR biosensor applications. Magnetite (Fe3O4) nanoparticles were analyzed using XRD, TEM+SAED, and VSM. The XRD results showed that the three samples had an inverse spinel cubic structure, which was the phase of magnetite or Fe3O4. The crystallite size of the sample with the lowest reaction temperature (40°C) was the smallest among the other samples. The TEM results showed that the grain size of nanoparticles increased with the increase in reaction temperature from 40°C to 60°C, and the morphology of nanoparticles was more homogenous and spherical. The VSM results showed that the values of Ms, Mr, and Hc increased with the increase in reaction temperature from 40°C to 60°C, and from 40°C to 80°C. But the values of Ms, Mr, and Hc decreased with the increase in reaction temperature from 60°C to 80°C.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Aplikasi nanopartikel magnetit (Fe3O4) sebagai magnetik label menggunakan GMR sensor memiliki potensi yang cukup baik untuk mendeteksi biomolekul. Pada penelitian ini, sintesis nanopartikel magnetit (Fe3O4) menggunakan metode kopresipitasi telah berhasil dilakukan. Proses sintesis dilakukan dengan kecepatan pengadukan 450 rpm dalam waktu 90 menit dan suhu sintesis yang divariasikan untuk masing-masing sampel yaitu 40°C, 60°C, dan 80°C. Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh variasi suhu sintesis terhadap karakterisitik nanopartikel magnetit (Fe3O4) untuk aplikasi GMR biosensor. Karakterisasi nanopartikel dilakukan menggunakan XRD, TEM+SAED, dan VSM. Hasil XRD menunjukkan ketiga sampel memiliki struktur kristal berbentuk kubik spinel invers yang merupakan fasa magnetit atau Fe3O4, dan sampel dengan suhu sintesis terendah 40°C memiliki ukuran kristal terkecil. Hasil TEM menunjukkan peningkatan suhu sintesis dari 40°C ke 60°C menghasilkan nanopartikel yang bentuknya lebih seragam dan bulat serta ukuran butir nanopartikel lebih besar. Hasil VSM menunjukkan nilai Ms, Mr, dan Hc meningkat seiring peningkatan suhu sintesis dari 40°C ke 60°C, dan dari 40°C ke 80°C, namun nilai Ms, Mr, dan Hc menurun dengan peningkatan suhu sintesis dari 60°C ke 80°C. | |||||||||
| Uncontrolled Keywords: | Nanoparticles, Fe3O4, Different Reaction Temperatures, GMR Biosensor Nanopartikel, Fe3O4, Variasi Suhu Sintesis, GMR Biosensor | |||||||||
| Subjects: | Q Science > QC Physics | |||||||||
| Divisions: | 02-Fakultas Keguruan dan Ilmu Pendidikan 02-Fakultas Keguruan dan Ilmu Pendidikan > 84203-Jurusan Pendidikan Fisika |
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| Depositing User: | Sri Rizki Fitrianni | |||||||||
| Date Deposited: | 21 Sep 2023 16:35 | |||||||||
| Last Modified: | 21 Sep 2023 16:35 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/29485 |
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