The Influence Factors on δ-FeOOH Nanosheets Preparation

Abstract:

δ-FeOOH nanosheets have been synthesized on a large-scale by a simple method using NH₃·H₂O as precipitant at pH 10. The samples were characterized by FESEM, XRD, TEM, FTIR and PPMS. The results of this characterization reveal that the complexes [Fe^III(OH)_n(NH₃)_m]³⁻ⁿ formed between Fe³⁺ ions and NH₃ favor nucleation and oriented growth of δ-FeOOH nanosheets. The influences of precipitant, the initial pH, and concentration of H₂O₂ on the structure and morphology of the as-prepared δ-FeOOH have been investigated. Magnetic investigations show that the δ-FeOOH nanosheets exhibit high coercivity.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 401-406
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.401
• Online since: April 2016
• Authors: Bin Lu, Mei Qin, Ping Li, Shu Ping Wang, Yu Wei
• Keywords: Chemical Synthesis, Magnetic Properties, Oxides

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