SINTESIS NANOPARTIKEL HEMATITE ( -Fe2O3 ) DENGAN METODE KALSINASI BERBANTUAN GELOMBANG MIKRO

Sofiana, Eka Yulita (2013) SINTESIS NANOPARTIKEL HEMATITE ( -Fe2O3 ) DENGAN METODE KALSINASI BERBANTUAN GELOMBANG MIKRO. Other thesis, UNIVERSITAS SEBELAS MARET.

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    Abstract

    Nanopartikel hematite telah berhasil disintesis dari reaksi FeCl3.6H2O dan NaOH dalam aquades dengan metode kalsinasi berbantuan gelombang mikro. Konsentrasi NaOH divariasi pada 0,5M, 1,0M, dan 1,5M. Larutan NaOH ditambahkan ke dalam larutan FeCl3.6H2O (1M) setetes demi setetes sampai larutan berwarna coklat. Pre-heating dilakukan dengan bantuan gelombang mikro selama 10 menit dan 15 menit sebelum dikalsinasi pada temperatur 250oC, 300oC, dan 350oC masing-masing selama 30 menit. Spektrum XRD memperlihatkan bahwa intensitas hematite (112) paling dominan dibanding dengan intensitas hematite (104), hematite (110), dan magnetite (220) sehingga dapat disimpulkan bahwa kristal hematite cenderung tumbuh lebih cepat pada arah (112). Hal ini dikarenakan bahwa energi permukaan pada bidang [112] dalam struktur hematite heksagonal lebih kecil jika dibandingkan dengan bidang [104] dan [110] heksagonal ataupun [220] kubik. Kata kunci : kalsinasi, hematite, gelombang mikro, magnetite. Hematite nanoparticles have been successfully synthesized from FeCl3.6H2O and NaOH reaction in aquadest using microwave – assisted calcination method. Concentration of NaOH was varied in 0.5M, 1.0M and 1.5M. Dropwise NaOH was added to the FeCl3.6H2O (1M) until solution color changed to brown. Pre-heating was performed using microwave for 10 min and 15 min before the solution calcinated at temperatures of 250oC, 300oC, and 350oC for 30 min. The XRD patterns showed that hematite (112) peak was dominant compare to other peaks such as hematite (104), hematite (110), and magnetite (220) so that it was concluded that the crystal growth of hematite (112) orientation was faster than other crystal orientations. This was caused by the surface energy of hexagonal [112] plane was smaller than hexagonal [104], hexagonal [110] and cubic [220] planes. Key words: Calcinations, hematite, microwave, magnetite

    Item Type: Thesis (Other)
    Subjects: Q Science > QC Physics
    Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika
    Depositing User: Satria Nur Fauzi
    Date Deposited: 05 May 2014 23:57
    Last Modified: 05 May 2014 23:57
    URI: https://eprints.uns.ac.id/id/eprint/15021

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