Akaganeite-type b-FeO(OH) nanocrystals: preparation and characterization

 
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Akaganeite-type b-FeO(OH) nanocrystals: preparation and characterization

Matis, Konstantinos
Nalbandian, L.
Deligianni-Giannakoudaki, Eleni
Bakogiannakis, Dimitrios
Zoumpoulis, Anastasios

The preparation of nanocrystalline b-FeO(OH) by precipitation from an aqueous solution of the chloride salt and the investigation of relative surface properties of the iron oxyhydroxide gel were the aims of this study. A new advantageous method using ammonium carbonate as precipitating agent is presented by which the synthesis of akaganeite(b-FeO(OH) was accomplished. Akaganeite was transformed to iron oxide hydroxide (FeOOH) and ®nally to hematite(a-Fe2O3) after thermal treatment at 473 and 673 K, respectively. The use of a volatile agent for the hydrolysis process, the special method of chloride ion removal, as well as the freeze-drying technique, led to the production of a material consisting of nanocrystals with high surface area and defined pore size distribution.

Article / Άρθρο
info:eu-repo/semantics/article

Hematite
Iron oxide hydroxide Nanocrystals
Akaganeite

Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (EL)
Aristotle University of Thessaloniki (EN)

2001
2009-07-07T11:34:33Z


Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης, Σχολή Θετικών Επιστημών, Τμήμα Χημείας

Microporous and Mesoporous Materials, vol.42 [2001] p.49-57 [Published Version]
urn:ISSN:13871811

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info:eu-repo/semantics/openAccess



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