Comparative X-Ray Diffraction (XRD) Study on the Synthesis of Natural Based Magnetic Silica Nanoparticles

Abstract:

The aim of this study was to compare the synthesis process of magnetic silica nanoparticles (Fe-SNP) through the analysis of X-ray Diffraction (XRD) results. Fe₃O₄ magnetic nanopowders was synthesized by ultrasonic assisted co-precipitation and Fe-SNP was synthesized by direct mixing method of sodium silicate (Na₂SiO₃) and magnetite (Fe₃O₄) and the sol-gel method. Silica sludge was used as a silica source from Indonesia geothermal power plant waste. The synthesized of Fe-SNP is the functionalization of Fe₃O₄ with silica. Variations concentration of Na₂SiO₃ is used for the direct mixing method and variations of Fe₃O₄ form is used for the sol-gel method. Particles formed and particle size were characterized by XRD. The XRD results showed that there is no SiO₂ phase in the sample synthesized by direct mixing method while two phases of SiO₂ and Fe₃O₄ were found in the sample synthesized by sol-gel method. The size of the Fe₃O₄ nanoparticles calculated with Scherer’s formula and it obtained 19.9 nm, while the Fe₃O₄ nanoparticles with the addition of 20 mL and 6 mL Na₂SiO₃ concentrations were 6,53 nm and 10,23 nm. For the sol-gel method the size of Fe₃O₄ nanoparticles obtained was 11,03 using Fe₃O₄ powders and 9,86 using Fe₃O₄ solutions.

• Periodical: Journal of Metastable and Nanocrystalline Materials (Volume 35)
• Pages: 25-31
• DOI: https://doi.org/10.4028/p-6d8vlt
• Online since: February 2023
• Authors: Muhammad Yovinanda Maulana*, Brian Yuliarto, Siti Nurul Aisyiyah Jenie, Ni Luh Wulan Septiani
• Keywords: Fe₃O₄ Nanoparticles, Magnetic, Magnetic Silica, Sol-Gel, XRD

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