Sintesis Nanopartikel Fe2O3 Dari Batu Besi Dengan Metode Kopresipitasi Dalam pH Bervariasi

Nailazzulfa, Kunti (2015) Sintesis Nanopartikel Fe2O3 Dari Batu Besi Dengan Metode Kopresipitasi Dalam pH Bervariasi. Undergraduate thesis, Institut Technology Sepuluh Nopember.

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Abstract

Sintesis nanopartikel Fe2O3 dengan bahan dasar batu besi lokal dari Tanah Laut, Kalimantan Selatan telah dilakukan dengan metode kopresipitasi. Sintesis dimulai dengan melarutkan batu besi ke HCl pada temperatur 70° C selama 1 jam, diikuti dengan penyaringan. Larutan lolos saring selanjutnya diencerkan dengan aquades untuk mendapatkan pH 1 dan diendapkan menggunakan NH4OH untuk mendapatkan pH 3, 5 dan 7. Hasil dari proses sintesis kemudian dikeringkan pada temperatur 100 °C. Serbuk kering yang dikalsinasi pada temperatur 500 °C, 800 °C dan 1100 °C. Serbuk hasil kalsinasi dikarakterisasi menggunakan XRD dimana data dianalisis menggunakan metode Rietveld melalui perangkat lunak Rietica. Selanjutnya, analisis ukuran kristal dilakukan dengan pengujian TEM. Hasil penelitian menunjukkan hematit murni (Fe2O3) dicapai setelah semua proses kalsinasi. Ukuran kristal hematit adalah sekitar 30 nm untuk sampel pH 3 dan sekitar 10 nm untuk sampel pH 7. ======================================================================================================= Synthesis of Fe2O3 nanoparticles based on local iron stone from Tanah Laut, South Kalimantan has been performed with a coprecipitation method. The synthesis started by dissolving the bulk iron stone into HCl at a temperature of 70 °C for 1 hour, followed by filtering. The solution was further diluted with distilled water to obtain a pH of 1 and precipitated using NH4OH to obtain a pH of 3, 5 and 7. The results of the process ware then dried at 100 °C. The dried powders were calcined at 500 °C, 800 ° C and 1100 °C. The calcined powders were characterized using XRD where the data were analyzed using the Rietveld method through Rietica software. Furthermore, the crystal size analysis was performed by TEM examination. Results showed pure hematite (Fe2O3) was achieved after the all calcination processes. The crystallite size of hematite was about 30 nm for pH 3 sample and about 10 nm for pH 7 sample.

Item Type: Thesis (Undergraduate)
Additional Information: RSFi 541.394 Nai s
Uncontrolled Keywords: batu besi, hematit, metode kopresipitasi, variasi pH, nanokristal.
Subjects: T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles.
Divisions: Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 12 Dec 2019 01:51
Last Modified: 12 Dec 2019 01:51
URI: https://repository.its.ac.id/id/eprint/72338

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