TY - JOUR
T1 - Hydrothermal synthesis of LnMnO3 (Ln = Ho-Lu and Y)
T2 - Exploiting amphoterism in late rare-earth oxides
AU - Stampler, Evan S.
AU - Sheets, William C.
AU - Prellier, Wilfrid
AU - Marks, Tobin J.
AU - Poeppelmeier, Kenneth R.
PY - 2009/6/26
Y1 - 2009/6/26
N2 - The reactivity of Mn2O3 and late rare-earth sesquioxides in alkaline aqueous solution affords a high-yield formation of rare-earth manganites, LnMnO3 (Ln = Ho-Lu and Y). The yield of the products depends significantly on the pH, which determines the solubility of the manganese cation, and reaction temperature, which regulates the decomposition of the insoluble rare-earth trihydroxide, Ln(OH)3, to the more reactive oxide hydroxide, LnO(OH). Plate- and needle-like LnMnO3 crystallites of a few micrometers in size have been prepared at reaction temperatures where the rare-earth oxide hydroxide is thermodynamically stable, whereas at lower temperatures the insoluble rare-earth trihydroxide persists and no reaction is observed.
AB - The reactivity of Mn2O3 and late rare-earth sesquioxides in alkaline aqueous solution affords a high-yield formation of rare-earth manganites, LnMnO3 (Ln = Ho-Lu and Y). The yield of the products depends significantly on the pH, which determines the solubility of the manganese cation, and reaction temperature, which regulates the decomposition of the insoluble rare-earth trihydroxide, Ln(OH)3, to the more reactive oxide hydroxide, LnO(OH). Plate- and needle-like LnMnO3 crystallites of a few micrometers in size have been prepared at reaction temperatures where the rare-earth oxide hydroxide is thermodynamically stable, whereas at lower temperatures the insoluble rare-earth trihydroxide persists and no reaction is observed.
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U2 - 10.1039/b900370c
DO - 10.1039/b900370c
M3 - Article
AN - SCOPUS:67649103753
VL - 19
SP - 4375
EP - 4381
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
SN - 0959-9428
IS - 25
ER -