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Direct Formation of Crystalline Gadolinium‐Doped Ceria Powder via Polymerized Precursor Solution
Author(s) -
Wang Shuqiang,
Maeda Kunihiro,
Awano Masanobu
Publication year - 2002
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.1151-2916.2002.tb00347.x
Subject(s) - gadolinium , polymerization , materials science , crystallization , ethylene glycol , cerium , solid solution , oxide , chemical engineering , cerium oxide , inorganic chemistry , nuclear chemistry , chemistry , polymer , metallurgy , engineering , composite material
Synthesis of Ce 0.9 Gd 0.1 O 1.95 (CGO) powder from a polymeric precursor solution containing a mixture of nitrates, nitric acid, and ethylene glycol was investigated with emphasis on the effect of polymerization of the precursor solution on the crystallization and morphology of the derived solid intermediate and the final oxide powder. It is shown for the first time in this work that the solid intermediate derived from the polymerized solution is present in the form of well‐crystallized cerium‐gadolinium formate solid solution, Ce 1− x Gd x (HCOO) 3 , exhibiting anisotropic growth. Further polymerization of the precursor solution resulted in the direct formation of loosely agglomerated nanoscaled CGO oxide powder from the polymerized solution at temperatures as low as 130°C.