Sintesis Oksida Perovskit La₁₋ₓBaₓCoO₃₋δ dengan Metode Kopresipitasi dan Karakterisasinya

Thoriyah, Anis (2010) Sintesis Oksida Perovskit La₁₋ₓBaₓCoO₃₋δ dengan Metode Kopresipitasi dan Karakterisasinya. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Oksida perovskit La₁₋ₓBaₓCoO₃₋δ, x = 0,0–0,5 dengan interval 0,1, disintesis dengan metode kopresipitasi menggunakan larutan NaOH sebagai bahan pengendap. Oksida tersebut dianalisis fasa mineralnya menggunakan difraksi sinar-X sedangkan analisis komposisinya menggunakan XRF. Berdasarkan pola difraksi sinar-X yang diperoleh, diketahui bahwa oksida hasil sintesis telah menunjukkan keberadaan fasa oksida perovskit yang muncul di daerah puncak khas perovskit, yaitu di sekitar sudut 2θ = 23°, 32°, 33°, 41°, 47°, 53°, 58° dan 59°. Selain puncak-puncak khas oksida perovskit, ditemukan pula puncak-puncak difraksi fasa non perovskit. Fasa non perovskit yang teridentifikasi tersebut adalah Co₃O₄. Selain itu, dari difraktogram XRD dapat pula diamati pergeseran sudut difraksi akibat substitusi Ba(II) terhadap induk oksida LaCoO₃₋δ. Sedangkan berdasarkan analisis XRF, komposisi yang paling mendekati komposisi yang sebenarnya adalah pada LaCoO₃₋δ dimana diperoleh La₁,₀₃CoO₃₋δ.
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Perovskite-oxide La₁₋ₓBaₓCoO₃₋δ, x = 0,1–0,5 with 0,1 interval was synthesized using coprecipitation method and NaOH as precipitate agent. The perovskite-oxide was characterized by X-Ray Diffraction to analyze the mineral phase of perovskite and XRF to analyze its composition. The XRD pattern shows the peak of perovskite phase was obtained at 2θ = 23°, 32°, 33°, 41°, 47°, 53°, 58° dan 59°. The diffraction peak of non-perovskite phase was also occurred. Presence of non-perovskite phase detected were Co₃O₄. In addition to XRD result, the shift of peak diffraction is caused by substitution of Ba(II) to the main LaCoO₃₋δ. While XRF analysis shows the results obtained are almost similar to the nominal values. The elemental composition which similar from the nominal is La₁,₀₃CoO₃₋δ that reveals La₁,₀₃CoO₃₋δ.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Perovskit, La1_xBaxCo03_8, kopresipitasi,Perovskite, La1_xBaxCo03_8, coprecipitation
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	15 Oct 2026 08:26
Last Modified:	15 Oct 2026 08:26
URI:	http://repository.its.ac.id/id/eprint/145627

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