Pengaruh Penambahan Asam Laurat Terhadap Sifat Fisis dan Magnetik Nanopartikel Fe3O4

Authors

  • Rengga Adit Kurniawan Jurusan Fisika FMIPA Universitas Andalas
  • Astuti Astuti Jurusan Fisika FMIPA Universitas Andalas
  • Mulda Muldarisnur

DOI:

https://doi.org/10.25077/jfu.6.4.362-367.2017

Abstract

Telah dilakukan sintesis nanopartikel Fe3O4 dari batuan besi menggunakan metode kopresipitasi dengan penambahan asam laurat sebagai zat aditif. Variasi massa asam laurat yang diberikan adalah 0, 35,40, 45, dan 50 g. Karakterisasi sampel yang dilakukan meliputi karakterisasi morfologi permukaan sampel menggunakan SEM, ukuran kristal menggunakan XRD (X-Ray Difractometer) dan BartingtonMagnetic Susceptibility Meter (MS2B) untuk mengukur nilai suseptibilitas magnetik. Hasil karakterisasi menggunakan XRD menunjukan ukuran kristal semua sampel berturut-turutadalah54,4; 31,9; 29,5; 33; dan 20,2 nm. Hasil karakterisasi SEM (Scanning Electron Microscope) menunjukan distribusi partikel yang paling merata/seragam didapatkan pada sampel dengan penambahan asam laurat sebanyak 45 g dengan ukuran partikel berkisar antara 25-64 nm.Pengukuran nilai suseptibilitas magnetik berturut-turut adalah 2757,1×10-8; 1479,0×10-8; 948,5×10-8; 3344,2×10-8; dan 1174,7×10-8 m3kg-1.

Kata kunci: nanopartikel Fe3O4, kopresipitasi, asam laurat, suseptibilitas magnetik

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Published

2017-10-03

Issue

Vol. 6 No. 4 (2017)

Section

Articles

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Copyright (c) 2017 Rengga Adit Kurniawan, Astuti Astuti, Mulda Muldarisnur

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