Situmeang, Rudy and Sembiring, Simon (2018) CHARACTERISTICS OF LaCrO3 NANOMATERIAL : THE EFFECT OF CALCINATION TEMPERATURE. In: The 1st INTERNATIONAL CONFERENCE ON SCIENCE, MATHEMATICS, ENVIRONMENT AND EDUCATION, September 16-17, 2017, Best Western Premier, Solo City, Central Java, Indonesia.. (Submitted)

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Abstract

LaCrO3 nanomaterial has been prepared using sol – gel and freeze drying method, simultaneously. Preparation of material was carried out by dissolving nitrate salts of lanthanum, and chrome in pectin solution and then the sample was stirred thoroughly using magnetic stirrer while adjusting pH to 11 until the gel formed. After freeze-drying process, the precursors were subjected to the calcination treatment at 600, 700, and 800C, respectively and subsequently characterized using the techniques of X-ray diffraction (XRD), TEM and DRS analysis. The results proved that a major crystalline phase of LaCrO3 perovskite is formed as temperature calcination increased. Crystallite size identification using Scherrer equation proved that the size greater as temperature calcination increased. Then, grain size analysis using TEM proved that calcination temperature gave a small effect to the size. DRS analysis also proved that band gap energy is affected by temperature calcination, and the value is in the range of 2.9 eV.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	Q Science > QD Chemistry
Divisions:	Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User:	Dr. Rudy Tahan Mangapul Situmeang
Date Deposited:	16 Nov 2017 07:06
Last Modified:	16 Nov 2017 07:06
URI:	http://repository.lppm.unila.ac.id/id/eprint/4376

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