Effects of Different Ligands Value on the Synthesis of FePO₄ Precursor

Abstract:

This FePO₄ precursor was synthesized from Fe (NO₃)₃·9H₂O, NH₄H₂PO₄ ,different ligands by liquid precipitation route. Effects of different ligands value on the synthesis of FePO₄ precursor were studied. The phrase, structure and morphology of FePO₄ were characterized by XRD and SEM . The results showed that the structure and morphology of composite materials are dependence on synthesis process and complexant. After being added with different ligands, FePO₄ precursor’s morphologies have significant differences. Iron phosphate can produce the pure phase after calcinations. Keep it under 85°C for three hours after adding the citric acid and ammonium oxalate by liquid phase precipitation.When the concentration is 1.0 mol/L, PH = 1.5 ,we get flaky microspheres which are about 8 um. After being calcinated under 700°C for 2 hours, we get pure iron phosphate finally. The properties of micro ball with high specific surface area and tap density make FePO₄ precursor has important applications in many ways.

• Periodical: Materials Science Forum (Volumes 809-810)
• Pages: 267-271
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.809-810.267
• Online since: December 2014
• Authors: Long Fei Mu*, Song Li, Yun Long Cui
• Keywords: FePO₄, Ligands (Surfactant), Liquid Phase Precipitation, Morphology

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