Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template
A facile EDTA-citrate complexing process with in situ created recyclable NiO as inorganic template was developed for the synthesis of mesoporous samaria-doped ceria (SDC) at high temperatures. By applying metal nitrates as the raw materials for the cation sources and EDTA and citric acid as the chel...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier B.V.
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/36314 |
| _version_ | 1848754734629912576 |
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| author | Ran, R. Guo, Y. Zheng, Y. Wang, K. Shao, Zongping |
| author_facet | Ran, R. Guo, Y. Zheng, Y. Wang, K. Shao, Zongping |
| author_sort | Ran, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A facile EDTA-citrate complexing process with in situ created recyclable NiO as inorganic template was developed for the synthesis of mesoporous samaria-doped ceria (SDC) at high temperatures. By applying metal nitrates as the raw materials for the cation sources and EDTA and citric acid as the chelants, the molecular-level homogeneous mixing of the metal ions was successfully preserved to the solid precursor. Low-temperature calcination resulted in the formation of mixture oxides of nano-size SDC and NiO oxides, as demonstrated by XRD, FT-IR and BET analysis. A possible mechanism for the formation of mesoporous SDC was proposed, in which the SDC particles surrounded the nano-size NiO grains and sintered during the high-temperature calcination. Dissolving the coated NiO in SDC and self-aggregated NiO particulates from the mixture with diluted HNO3 resulted in a porous pure-phase SDC oxide. At optimal SDC to NiO ratios, mesoporous, thermally stable and well-crystallized SDC powder with narrow pore size distribution and high surface area was synthesized. © 2009 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T08:45:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-36314 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:45:07Z |
| publishDate | 2010 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-363142017-09-13T15:25:11Z Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template Ran, R. Guo, Y. Zheng, Y. Wang, K. Shao, Zongping A facile EDTA-citrate complexing process with in situ created recyclable NiO as inorganic template was developed for the synthesis of mesoporous samaria-doped ceria (SDC) at high temperatures. By applying metal nitrates as the raw materials for the cation sources and EDTA and citric acid as the chelants, the molecular-level homogeneous mixing of the metal ions was successfully preserved to the solid precursor. Low-temperature calcination resulted in the formation of mixture oxides of nano-size SDC and NiO oxides, as demonstrated by XRD, FT-IR and BET analysis. A possible mechanism for the formation of mesoporous SDC was proposed, in which the SDC particles surrounded the nano-size NiO grains and sintered during the high-temperature calcination. Dissolving the coated NiO in SDC and self-aggregated NiO particulates from the mixture with diluted HNO3 resulted in a porous pure-phase SDC oxide. At optimal SDC to NiO ratios, mesoporous, thermally stable and well-crystallized SDC powder with narrow pore size distribution and high surface area was synthesized. © 2009 Elsevier B.V. All rights reserved. 2010 Journal Article http://hdl.handle.net/20.500.11937/36314 10.1016/j.jallcom.2009.10.129 Elsevier B.V. restricted |
| spellingShingle | Ran, R. Guo, Y. Zheng, Y. Wang, K. Shao, Zongping Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template |
| title | Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template |
| title_full | Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template |
| title_fullStr | Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template |
| title_full_unstemmed | Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template |
| title_short | Well-crystallized mesoporous samaria-doped ceria from EDTA-citrate complexing process with in situ created NiO as recyclable template |
| title_sort | well-crystallized mesoporous samaria-doped ceria from edta-citrate complexing process with in situ created nio as recyclable template |
| url | http://hdl.handle.net/20.500.11937/36314 |