Fe-EDTA Thermal Decomposition, a Route to Highly Crystalline Hematite (Alpha Fe2O3) Nanoparticle Synthesis

Autor:	Marius Chirita, Ioan Grozescu, Adrian Ieta, Radu Banica
Rok vydání:	2010
Předmět:	Materials science General Chemical Engineering Inorganic chemistry Thermal decomposition Nanoparticle Hematite Crystallinity Nanocrystal visual_art medicine visual_art.visual_art_medium Ferric Stoichiometry Scherrer equation medicine.drug
Zdroj:	Particulate Science and Technology. 28:217-225
ISSN:	1548-0046 0272-6351
DOI:	10.1080/02726351.2010.481576
Popis:	In this study, we develop an experimental procedure to synthesize hematite nanoparticles by hydrothermal decomposition of Fe-EDTA complex in the presence of hydrogen peroxide, starting from ferric ammonium sulfate and Na 4 EDTA as main precursors. The product was investigated by X-ray diffraction, scaning electron microscopy, dispersive X-ray spectroscopy, magnetic measurements, and UV-vis optical absorption measurements. The size of nanoparticles was determined to be 42 nm evaluated by XRD patterns using the Scherrer equation. This method allowed the formation of pure hematite nanoparticles with good and stable crystallographic characteristics. This procedure can be an effective method for synthesizing hematite nanoparticles exhibiting good crystallinity, stoichiometry, magnetic, and optical band gap properties. A possible mechanism for the formation of hematite nanocrystals was suggested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::47305cc0841a583d4368cd111c82b70b https://doi.org/10.1080/02726351.2010.481576 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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