Situmeang, Rudy T.M and wibowo, sukma and Simanjuntak, Wasinton and Supryanto, R and Amalia, Rizki and Septanto, Mitra and Manurung, Posman and Sembiring, Simon (2015) Characteristics of Nanosize Spinel NixFe3-XO4 Prepared By Sol-Gel Method Using Egg White As Emulsifying Agent. Indonesian Journal of Chemistry, 15 (2). pp. 116-122. ISSN 1411 9420

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CHARACTERISTICS OF NANOSIZE SPINEL NixFe3-xO4.pdf

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Abstract

In this study, sol-gel method using egg white as emulsifying agent was applied to prepare nano size spinel NixFe3-xO4(with x = 0.2–1). Sample preparation was carried out by mixing the solution of Fe(NO3) and Ni(NO3)3.6 H2O with egg white, and then the sample was stirred thoroughly using magnetic stirrer. After the freeze-drying process, the sample was subjected to calcination treatment and subsequently characterized. The phase composition was evaluated using the X-ray diffraction (XRD) technique, followed by quantitative analysis using Rietveld and Debye-Scherrer Methods. The functionality of the sample was identified using Fourier Transform Infrared (FTIR) spectroscopy, and surface morphology and elemental composition were analyzed using scanning electron microscopy coupled with electron dispersive spectroscopy (SEM/EDS). The results of XRD characterization indicated that materials consist of various crystalline phases, with NiFe2O4 as a major phase. FTIR Analysis revealed the existence of both Lewis and Brønsted–Lowry acid sites, with Lewis acid as the prominent site. The sample was found to display relatively homogeneous surface morphology, having the crystallite size in the range of 33 to 61 nm according to the Debye-Scherrer equation. The EDS data indicated that the ratio of Fe/Ni is in agreement with the composition of the raw materials used.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User: Dr. Rudy Tahan Mangapul Situmeang
Date Deposited: 06 Nov 2018 03:07
Last Modified: 06 Nov 2018 03:07
URI: http://repository.lppm.unila.ac.id/id/eprint/9519

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