Continuous hydrothermal synthesis of nanometric BaZrO{sub 3} in supercritical water

Nanocrystalline barium zirconate (BaZrO{sub 3}) was synthesized using a hydrothermal synthesis process working in supercritical conditions and in a continuous way. By this method, we succeeded in the continuous and rapid production of nanopowders. As a preliminary work three barium precursors have b...

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Bibliographic Details
Published inJournal of solid state chemistry Vol. 181; no. 1
Main Authors Aimable, A., Xin, B., Millot, N., Aymes, D.
Format Journal Article
LanguageEnglish
Published United States 15.01.2008
Subjects
ACETATES
BARIUM HYDROXIDES
BARIUM NITRATES
CHEMICAL PREPARATION
CRYSTALS
GRAIN SIZE
HYDROTHERMAL SYNTHESIS
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
NANOSTRUCTURES
PEROVSKITE
ZIRCONATES
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Summary:Nanocrystalline barium zirconate (BaZrO{sub 3}) was synthesized using a hydrothermal synthesis process working in supercritical conditions and in a continuous way. By this method, we succeeded in the continuous and rapid production of nanopowders. As a preliminary work three barium precursors have been investigated: barium hydroxide (Ba(OH){sub 2}), barium acetate (Ba(CH{sub 3}COO){sub 2}) and barium nitrate (Ba(NO{sub 3}){sub 2}). Two of them (Ba(CH{sub 3}COO){sub 2} and Ba(NO{sub 3}){sub 2}) led to the pure perovskite phase. Then an experimental design has been conducted in order to determine the influence of the experimental parameters on the crystallinity and the grain size of the final product. - Graphical abstract: An experimental design has been conducted in order to determine the influence of the experimental parameters on the crystallinity and the grain size of BaZrO{sub 3} nanopowders obtained thanks to hydrothermal synthesis in supercritical water and in a continuous way.
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2007.11.015