Abstract
Crystalline cerium oxide carbonate hydrate (Ce2O(CO 3)2·H2O) was grown in aqueous solutions at a low temperature of 80 °C under ambient pressure. When cerium nitrate was used as a starting material, large Ce2O(CO3) 2·H2O particles were precipitated through homogeneous nucleation and subsequent fast crystal growth. In contrast, the usage of cerium chloride was found to promote the preferential precipitation of Ce2O(CO3)2·H2O on foreign substrates through heterogeneous nucleation and slow crystal growth. This phenomenon was applied to a chemical bath deposition of Ce2O(CO 3)2·H2O films. Immersion of glass substrates in the solution at 80 °C for typically 24 h resulted in formation of solid films with a unique morphology like a micrometer-scale brush. It was also found that samarium could be incorporated into Ce2O(CO 3)2·H2O during the crystal growth in the solutions, as evidenced by characteristic photoluminescence of Sm3+ in heating products of CeO2. These results suggest that rare-earth oxide carbonate hydrates with a variety of compositions and morphologies can be synthesized from the aqueous solutions.
| Original language | English |
|---|---|
| Pages (from-to) | 2036-2041 |
| Number of pages | 6 |
| Journal | Journal of Solid State Chemistry |
| Volume | 178 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2005 Jun |
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Keywords
- Cerium dioxide
- Cerium oxide carbonate hydrate
- Chemical bath deposition
- Crystal growth
- Photoluminescence
- Solid films
ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
Crystal growth of Ce2O(CO3)2·H 2O in aqueous solutions : Film formation and samarium doping. / Oikawa, Masashi; Fujihara, Shinobu.
In: Journal of Solid State Chemistry, Vol. 178, No. 6, 06.2005, p. 2036-2041.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Crystal growth of Ce2O(CO3)2·H 2O in aqueous solutions
T2 - Film formation and samarium doping
AU - Oikawa, Masashi
AU - Fujihara, Shinobu
PY - 2005/6
Y1 - 2005/6
N2 - Crystalline cerium oxide carbonate hydrate (Ce2O(CO 3)2·H2O) was grown in aqueous solutions at a low temperature of 80 °C under ambient pressure. When cerium nitrate was used as a starting material, large Ce2O(CO3) 2·H2O particles were precipitated through homogeneous nucleation and subsequent fast crystal growth. In contrast, the usage of cerium chloride was found to promote the preferential precipitation of Ce2O(CO3)2·H2O on foreign substrates through heterogeneous nucleation and slow crystal growth. This phenomenon was applied to a chemical bath deposition of Ce2O(CO 3)2·H2O films. Immersion of glass substrates in the solution at 80 °C for typically 24 h resulted in formation of solid films with a unique morphology like a micrometer-scale brush. It was also found that samarium could be incorporated into Ce2O(CO 3)2·H2O during the crystal growth in the solutions, as evidenced by characteristic photoluminescence of Sm3+ in heating products of CeO2. These results suggest that rare-earth oxide carbonate hydrates with a variety of compositions and morphologies can be synthesized from the aqueous solutions.
AB - Crystalline cerium oxide carbonate hydrate (Ce2O(CO 3)2·H2O) was grown in aqueous solutions at a low temperature of 80 °C under ambient pressure. When cerium nitrate was used as a starting material, large Ce2O(CO3) 2·H2O particles were precipitated through homogeneous nucleation and subsequent fast crystal growth. In contrast, the usage of cerium chloride was found to promote the preferential precipitation of Ce2O(CO3)2·H2O on foreign substrates through heterogeneous nucleation and slow crystal growth. This phenomenon was applied to a chemical bath deposition of Ce2O(CO 3)2·H2O films. Immersion of glass substrates in the solution at 80 °C for typically 24 h resulted in formation of solid films with a unique morphology like a micrometer-scale brush. It was also found that samarium could be incorporated into Ce2O(CO 3)2·H2O during the crystal growth in the solutions, as evidenced by characteristic photoluminescence of Sm3+ in heating products of CeO2. These results suggest that rare-earth oxide carbonate hydrates with a variety of compositions and morphologies can be synthesized from the aqueous solutions.
KW - Cerium dioxide
KW - Cerium oxide carbonate hydrate
KW - Chemical bath deposition
KW - Crystal growth
KW - Photoluminescence
KW - Solid films
UR - http://www.scopus.com/inward/record.url?scp=19344362233&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=19344362233&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2005.04.017
DO - 10.1016/j.jssc.2005.04.017
M3 - Article
AN - SCOPUS:19344362233
VL - 178
SP - 2036
EP - 2041
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 6
ER -