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All Journal Jurnal Fisika Unand INDONESIAN JOURNAL OF APPLIED PHYSICS
Khaira, Ihda
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Astronomy Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Sintesis dan Karakterisasi Sifat Magnet Nanokomposit Fe3O4@PEG:ZnO Khaira, Ihda; astuti, Astuti; Usna, Sri Rahayu Alfitri
Jurnal Fisika Unand Vol 11 No 1 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.1.57-61.2022

Abstract

Telah dilakukan sintesis dan karakterisasi nanokomposit Fe3O4@PEG:ZnO yang bertujuan untuk mengetahui sifat magnetik dan struktur core-shell dari sampel. Nanokomposit Fe3O4@PEG:ZnO disintesis menggunakan metode presipitasi dengan variasi sampel Fe3O4 dan ZnO yang digunakan yaitu Fe3O4, Fe3O4@ZnO (1:1), Fe3O4@ZnO (1:2), Fe3O4@PEG:ZnO (1:2), dan Fe3O4@PEG:ZnO (1:3). Karakterisasi sampel dilakukan menggunakan X-Ray Diffraction (XRD), Transmission Electron Microscope (TEM), Fourier Transform Infra Red (FTIR), Particle Size Analyzer (PSA), dan Bartington MS2 Magnetic Susceptibility Meter. Pola difraksi sinar-X menunjukkan bahwa sampel tersusun dari fasa Fe3O4 dan fasa ZnO dan ukuran kristal beturut-turut yaitu  17,495 nm; 16,271 nm; 25,449 nm; dan 24,443 nm. Hasil TEM menunjukkan terbentuknya struktur core-shell dimana PEG:ZnO sebagai shell dan Fe3O4 sebagai core. Dari hasil FTIR terdapat ikatan C-O dan C-C yang menunjukkan terbentuknya PEG, ikatan Fe-O menunjukkan terbentuknya Fe3O4,dan ikatan Zn-O menunjukkan terbentuknya ZnO. Pengujian dengan PSA didapatkan ukuran partikel sebesar 33 nm, 23 nm, dan 16 nm dengan distribusi ukuran partikel yaitu 25%, 50%, dan 75%. Pengujian menggunakan Bartington MS2 didapatkan nilai suseptibilitas magnet berturut-turut yaitu (12,34; 11,36; 11; 10,99) x 10-6m3kg-1 dan persentase bulir superparamagnetik berkisar antara 10% sampai 75%. 
Sintesis dan Karakterisasi Struktur dan Sifat Magnet Nanokomposit Fe3O4@PEG:ZnO Astuti, Astuti; khaira, ihda; Arief, syukri; Usna, Sri Rahayu Alfitri
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 2 (2022): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i2.58514

Abstract

Fe3O4@PEG:ZnO nanocomposites were synthesized by the coprecipitation method with various of the samples were Fe3O4, Fe3O4@ZnO (1:1), Fe3O4@PEG: ZnO (1:2), and Fe3O4@ PEG: ZnO (1:3). The samples were synthesized with variation in the concentration of ZnO to Fe3O4. The concentration ratio of (Fe3O4:ZnO) were (1:1), (1:2), and (1:3). In addition, polyethylene glycol (PEG) is also used to prevent the agglomeration of Fe3O4. Sample characterization was carried out using X-Ray Diffraction (XRD), Transmission Electron Microscope (TEM), Fourier Transform Infrared (FTIR), Particle Size Analyzer (PSA), and vibrating Sample Magnetometer (VSM). The XRD patterns show that the sample is composed of Fe3O4phase and ZnO phase with crystal structure cubic and wurtzite respectively. The TEM image shows the formation of a core-shell structure where PEG: ZnO is the shell and Fe3O4 is the core. From the FTIR results, there are C-O and C-C bonds which indicate the formation of PEG, Fe-O bonds indicate the formation of Fe3O4 and Zn-O bonds indicate the formation of ZnO. Characterization with PSA obtained particle sizes of 33 nm, 23 nm, and 16 nm with particle size distributions of 25%, 50%, and 75% so that the average particle size is 24 nm. The VSM results show that Fe3O4@PEG: ZnO (1:2) nanocomposite has a high magnetic saturation of 66.58 emu/g, with superparamagnetic properties, which has the potential to be developed as a bioimaging material.
Co-Authors Astuti - Syukri Arief Usna, Sri Rahayu Alfitri