Preparation of metal-semiconductor hybrid nanostructure
Metal nanostructures have a unique property from their bulk form due to their quantum confinement effect. One of the properties that spark the interest of scientist is their optical properties in which these metal nanostructures will induce local surface plasmon resonance when they interact with lig...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/147654 |
| _version_ | 1826124018162335744 |
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| author | Gihm, Wen De |
| author2 | Xue Can |
| author_facet | Xue Can Gihm, Wen De |
| author_sort | Gihm, Wen De |
| collection | NTU |
| description | Metal nanostructures have a unique property from their bulk form due to their quantum confinement effect. One of the properties that spark the interest of scientist is their optical properties in which these metal nanostructures will induce local surface plasmon resonance when they interact with light. Thus, they can be used in catalytic reactions such as water splitting and hydrogenation that involve applications to improve the quality of the environment. However, when these nanoparticles are coated with a different material, there will be an enhancement in its local surface plasmon resonance. This is mainly due to factor such as the size, shape and dielectric constant of the surrounding medium which will affect its effectiveness during its catalytic reaction.
This study will mainly demonstrate the photocatalytic reaction to degrade methylene blue dye using Au as a catalyst. Au will be synthesized by seed mediated method and coated with SiO2 and Pt before exposing methylene blue dye under visible light with the catalyst. The results indicate that Au with a thinner coating of SiO2 is the most effective in degrading the methylene blue dye. Furthermore, the addition of Pt on the SiO2 would enhance the rate of degradation further. However, factors like agglomeration can also affect the effectiveness of the degradation. |
| first_indexed | 2024-10-01T06:13:48Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/147654 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:13:48Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1476542023-03-04T15:43:31Z Preparation of metal-semiconductor hybrid nanostructure Gihm, Wen De Xue Can School of Materials Science and Engineering CXUE@ntu.edu.sg Engineering::Materials Metal nanostructures have a unique property from their bulk form due to their quantum confinement effect. One of the properties that spark the interest of scientist is their optical properties in which these metal nanostructures will induce local surface plasmon resonance when they interact with light. Thus, they can be used in catalytic reactions such as water splitting and hydrogenation that involve applications to improve the quality of the environment. However, when these nanoparticles are coated with a different material, there will be an enhancement in its local surface plasmon resonance. This is mainly due to factor such as the size, shape and dielectric constant of the surrounding medium which will affect its effectiveness during its catalytic reaction. This study will mainly demonstrate the photocatalytic reaction to degrade methylene blue dye using Au as a catalyst. Au will be synthesized by seed mediated method and coated with SiO2 and Pt before exposing methylene blue dye under visible light with the catalyst. The results indicate that Au with a thinner coating of SiO2 is the most effective in degrading the methylene blue dye. Furthermore, the addition of Pt on the SiO2 would enhance the rate of degradation further. However, factors like agglomeration can also affect the effectiveness of the degradation. Bachelor of Engineering (Materials Engineering) 2021-04-08T13:47:58Z 2021-04-08T13:47:58Z 2021 Final Year Project (FYP) Gihm, W. D. (2021). Preparation of metal-semiconductor hybrid nanostructure. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/147654 https://hdl.handle.net/10356/147654 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials Gihm, Wen De Preparation of metal-semiconductor hybrid nanostructure |
| title | Preparation of metal-semiconductor hybrid nanostructure |
| title_full | Preparation of metal-semiconductor hybrid nanostructure |
| title_fullStr | Preparation of metal-semiconductor hybrid nanostructure |
| title_full_unstemmed | Preparation of metal-semiconductor hybrid nanostructure |
| title_short | Preparation of metal-semiconductor hybrid nanostructure |
| title_sort | preparation of metal semiconductor hybrid nanostructure |
| topic | Engineering::Materials |
| url | https://hdl.handle.net/10356/147654 |
| work_keys_str_mv | AT gihmwende preparationofmetalsemiconductorhybridnanostructure |