Synthesis of Fe₂O₃/C Nanocomposite Using Microwave Assisted Calcination Method

Abstract:

Fe₂O₃/C nanocomposites were successfully synthesized using microwave assisted calcination method. Ferric (III) chloride hexahydrate (FeCl₃6H₂O), sodium hydroxide (NaOH), and dextrose monohydrate (C₆H₁₂O₆H₂O) were used as precursors. A microwave oven of 2.445 GHz with a power of 600 W for 20 minutes was employed during the syntheses. Calcination was performed in a simple furnace at 350 °C for 30 min. The molar ratio of C:Fe is the only process parameter. From Scanning Electron Microscope images, the average particle size were 199 nm and 74 nm for the samples with molar ratio of C:Fe of 1:2 and 1:1, respectively. X-ray diffractometer spectra showed that the obtained samples have γ-Fe₂O₃ (maghemite) crystal structure. Using the Scherrer method, the crystallite size were 61.7, 58.8, 52.5, and 48.8 nm for the samples with the molar ratios of C:Fe of 1:3, 1:2, 1:1, and 2:1, respectively. It means that the crystallite size of the nanocomposite decreases with the increase of the molar ratio of carbon to iron (C:Fe). The Brunauer-Emmett-Teller characterization showed that the surface area as high as 255.6 m²/g is achieved by of the Fe₂O₃/C nanocomposite with the molar ratio of C:Fe of 1:1.

• Periodical: Advanced Materials Research (Volume 896)
• Pages: 100-103
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.896.100
• Online since: February 2014
• Authors: Anggi Puspita Swardhani, Ferry Iskandar, Abdullah Mikrajuddin, Khairurrijal Khairurrijal*
• Keywords: Calcination, Fe₂O₃, Microwave Assisted, Nanocomposite, Synthesis

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