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A Soft Chemistry Route for the Synthesis of Nanostructured Pb 2 Ru 2 O 6.5 with a Controlled Stoichiometry
Author(s) -
Esposito Vincenzo,
Marani Debora,
Wachsman Eric D.,
Traversa Enrico
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.02182.x
Subject(s) - ruthenium , stoichiometry , pyrochlore , precipitation , aqueous solution , soft chemistry , chemistry , inorganic chemistry , chelation , metal , nuclear chemistry , materials science , catalysis , organic chemistry , meteorology , phase (matter) , physics
A new chemical route to synthesize nanostructured lead ruthenium pyrochlore (Pb 2 Ru 2 O 6.5 ) powders was developed. The synthesis was performed starting from a metal nitrate aqueous solution and N , N , N ′, N ′ tetramethylethylendiamine (TMEDA). The amine, which is a mild basic chelating agent, was able to control the simultaneous precipitation of lead and ruthenium oxo/hydroxides. For the sake of comparison, Pb 2 Ru 2 O 6.5 powders were prepared using the more conventional polymeric precursor method. The new method was effective for the synthesis of nanostructured Pb 2 Ru 2 O 6.5 powders already stable at 400°C and up to 1000°C.