Influence of phosphate species on green rust I transformation and local structure and morphology of γ-FeOOH

Autor:	Gadadhar Sahoo, Shun Fujieda, Shigeru Suzuki, Kozo Shinoda
Rok vydání:	2011
Předmět:	Absorption spectroscopy General Chemical Engineering Coordination number Inorganic chemistry General Chemistry Phosphate Microstructure Electrochemistry Rust chemistry.chemical_compound Adsorption chemistry Octahedron General Materials Science
Zdroj:	Corrosion Science. 53:2446-2452
ISSN:	0010-938X
DOI:	10.1016/j.corsci.2011.03.020
Popis:	To clarify the role of phosphate in the formation of corrosion products, the transformation of GRI(Cl−) with the addition of phosphate was characterized through XRD, TEM, and solution analysis. Electrochemical analysis showed that the transformation of GRI(Cl−) was delayed and the size of the final products, i.e., γ-FeOOH was reduced in the phosphate added case. X-ray absorption spectroscopy indicated that the neighboring Fe–Fe coordination number of FeO6 octahedral unit in γ-FeOOH was decreased. These effects of phosphate are attributed to its adsorption on GRI(Cl−) and nucleated γ-FeOOH that prevented particle growth during oxidation process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fd33c38f4e9c8e9eb3bae205cdc51cf4 https://doi.org/10.1016/j.corsci.2011.03.020 Zobrazit plný text záznamu Full Text from ScienceDirect