Low temperature molten salt synthesis of perovskite-type ACeO3(A=Sr, Ba) in eutectic NaCl-KCl
Article
Article Title | Low temperature molten salt synthesis of perovskite-type ACeO3(A=Sr, Ba) in eutectic NaCl-KCl |
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ERA Journal ID | 124562 |
Article Category | Article |
Authors | Liu, Ming (Author), Hu, Lei (Author), Xu, Pengfei (Author), Zhao, Kun (Author), Zong, Lingbo (Author), Yu, Ranbo (Author), Chen, Jun (Author) and Xing, Xianran (Author) |
Journal Title | Chemical Research in Chinese Universities |
Journal Citation | 31 (3), pp. 342-346 |
Number of Pages | 5 |
Year | 2015 |
Place of Publication | China |
ISSN | 1005-9040 |
2210-3171 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s40242-015-4330-0 |
Web Address (URL) | https://link.springer.com/article/10.1007/s40242-015-4330-0 |
Abstract | A molten salt method was developed for the synthesis of ACeO3(A=Sr, Ba) with perovskite structure at 750 °C(SrCeO3) and 850 °C(BaCeO3) in the eutectic NaCl-KCl. The synthetic temperature was much lower than that of the conventional method(generally>1000 °C). The structure and morphology of the product were characterized by means of X-ray diffraction(XRD), field emission scanning electron microscopy(FESEM) and transmission electron microscopy(TEM). The results show that the synthesized octahedral SrCeO3 crystallizes in the orthorhombic system with the unit cell parameters of a=0.85855 nm, b=0.61523 nm, c=0.60059 nm, and the synthesized cuboid BaCeO3 crystallizes in the cubic system with the unit cell parameter of a=0.43962 nm. The result of X-ray photoelectron spectroscopy(XPS) analysis indicates that both Ce4+ and Ce3+ exist in the two structures, and the Ce4+/Ce3+ peak area ratios for SrCeO3 and BaCeO3 are 1.93 and 2.12, respectively. Meanwhile, the adsorbed/lattice oxygen ratios(1.87 for SrCeO3 and 3.04 for BaCeO3) indicate the existence of a lot of oxygen vacancies in the structures of SrCeO3 and BaCeO3, which indicates a far-reaching significance to study the corresponding physicochemistry performance. |
Keywords | BaCeO3; Molten salt synthesis; Perovskite; SrCeO3; |
ANZSRC Field of Research 2020 | 340210. Solid state chemistry |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Science and Technology Beijing, China |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q425v/low-temperature-molten-salt-synthesis-of-perovskite-type-aceo3-a-sr-ba-in-eutectic-nacl-kcl
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