Synthesis of Maghemite (γ-Fe2O3) nanoparticles pigment from lathe waste by sonication – calcination method

Khoiroh, Lilik Miftahul ORCID: https://orcid.org/0000-0001-6634-6571, Khidin, Ferifa and Ningsih, Rachmawati (2020) Synthesis of Maghemite (γ-Fe2O3) nanoparticles pigment from lathe waste by sonication – calcination method. Presented at 10th international conference on green technology (ICGT 2019), 2-3 October, Savana Hotel and Convention Malang.

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Abstract

Polyethylene glycol (PEG) coated maghemite nanoparticles were synthesized using precursor variation through sonication-calcination method. The precursor was manufactured from lathe waste digested using (a) HCl: HNO3, (b) H2SO4: HNO3, and (c) H2SO4: HCl solvents. Samples were characterized using XRD, FTIR, color reader, and SEM-EDX. The X-ray diffraction pattern shows that Rietveld Refinement confirmed only one single-phase assigned to magnetite (Fe3O4) after sonication, one single-phase assigned to maghemite (-Fe2O3) after calcination, and widened peaks indicating nano-sized particles. Fourier transform infrared (FTIR) spectroscopy measurements confirmed the bonding of PEG to the magnetite and maghemite nanoparticles. Color reader measurement denoted the highest brightness level was achieved using precursor A. SEM-EDX data shows that the distribution of γ-Fe2O3 particles was not uniform. There were impurities detected, one of which was silica.

Item Type:	Conference (Poster)
Subjects:	03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030203 Inorganic Green Chemistry
Divisions:	Faculty of Mathematics and Sciences > Department of Chemistry
Depositing User:	lilik miftahul khoiroh
Date Deposited:	06 May 2020 09:43

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