Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes
This report demonstrates an investigation on a hydrothermal method to synthesise yttrium hydroxide and post-annealing to obtain yttrium oxide nanotubes. For this study, sodium hydroxide was chosen as the solvent with yttria powder as starting material. Three parameters: solvent concentration, mass o...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2009
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| Online Access: | http://hdl.handle.net/10356/15599 |
| _version_ | 1824455259800469504 |
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| author | Koh, Janice Shi Wei. |
| author2 | Gan Chee Lip |
| author_facet | Gan Chee Lip Koh, Janice Shi Wei. |
| author_sort | Koh, Janice Shi Wei. |
| collection | NTU |
| description | This report demonstrates an investigation on a hydrothermal method to synthesise yttrium hydroxide and post-annealing to obtain yttrium oxide nanotubes. For this study, sodium hydroxide was chosen as the solvent with yttria powder as starting material. Three parameters: solvent concentration, mass of yttria powder and temperature were varied to investigate their effects on nanotube growth. The optimised conditions were found to be 0.3 g of yttria starting powder reacted with 3 M sodium hydroixde at 190°C. The growth of yttrium hydroxide nanotubes can be explained with a dissolution-nucleation recrystallisation anisotropic growth mechanism. The formation of yttrium oxide nanotubes was found to be a dehydration transformation reaction from yttrium hydroxide with retention of morphology. |
| first_indexed | 2025-02-19T03:35:22Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/15599 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:35:22Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/155992023-03-04T15:39:54Z Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes Koh, Janice Shi Wei. Gan Chee Lip School of Materials Science and Engineering DRNTU::Engineering::Materials::Nanostructured materials DRNTU::Engineering::Materials::Ceramic materials DRNTU::Engineering::Materials::Material testing and characterization This report demonstrates an investigation on a hydrothermal method to synthesise yttrium hydroxide and post-annealing to obtain yttrium oxide nanotubes. For this study, sodium hydroxide was chosen as the solvent with yttria powder as starting material. Three parameters: solvent concentration, mass of yttria powder and temperature were varied to investigate their effects on nanotube growth. The optimised conditions were found to be 0.3 g of yttria starting powder reacted with 3 M sodium hydroixde at 190°C. The growth of yttrium hydroxide nanotubes can be explained with a dissolution-nucleation recrystallisation anisotropic growth mechanism. The formation of yttrium oxide nanotubes was found to be a dehydration transformation reaction from yttrium hydroxide with retention of morphology. Bachelor of Engineering (Materials Engineering) 2009-05-13T08:02:16Z 2009-05-13T08:02:16Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/15599 en Nanyang Technological University 33 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Nanostructured materials DRNTU::Engineering::Materials::Ceramic materials DRNTU::Engineering::Materials::Material testing and characterization Koh, Janice Shi Wei. Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes |
| title | Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes |
| title_full | Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes |
| title_fullStr | Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes |
| title_full_unstemmed | Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes |
| title_short | Hydrothermal synthesis of Yttrium Hydroxide and Oxide nanotubes |
| title_sort | hydrothermal synthesis of yttrium hydroxide and oxide nanotubes |
| topic | DRNTU::Engineering::Materials::Nanostructured materials DRNTU::Engineering::Materials::Ceramic materials DRNTU::Engineering::Materials::Material testing and characterization |
| url | http://hdl.handle.net/10356/15599 |
| work_keys_str_mv | AT kohjaniceshiwei hydrothermalsynthesisofyttriumhydroxideandoxidenanotubes |