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- Title
Synthesis of high surface area nanostructured La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> by thermal decomposition of new ion pair complex precursor.
- Authors
Miroliaee, A.; Chahaki, M. Mohammadi; Abdouss, M.; Heydari, H.
- Abstract
Abstract: The paper presents an investigation on the influence of the production method upon crystallite and particle size, surface area and morphology of La2Zr2O7 pyrochlore. Mesoporous La2Zr2O7 nanopowders were synthesized by thermal decomposition of [Zr(sal)3(H2O)2][La(dipic)2(H2O)3]⋅3(H2O), (dipic = 2,6‐pyridinedicarboxylate, sal = salicylate), ion‐pair complex precursor as a new method. For comparative purposes, two other samples were fabricated by co‐precipitation and citrate sol‐gel methods. The ion‐pair complex precursor technique displays the low degree agglomeration, the smallest crystallite size (8.6 nm) and the highest surface area (119.20 m2/g) and total pore value (0.13 cc/g), in comparison with two other conventional methods which are related to the influence of the fabrication method. The high structural stability of the complex precursor prevents the rapid growth of particles during the calcination process and thus improves the textural properties.
- Subjects
CHEMICAL precursors; ION pairs; PYROCHLORE; AGGLOMERATION (Materials); THERMAL barrier coatings
- Publication
Materialwissenschaft und Werkstoffechnik, 2018, Vol 49, Issue 6, p803
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201700120