Preparation and photocatalytic applications of plasmonic metal nanostructures
In this project, I have produced silver solution using a seed-mediated method. This is followed by photosynthesizing the silver nanoparticles with high intensity illuminator to obtain silver nanoprisms. Subsequently, I coated a layer of gold as its shell (Ag@Au) to preserve the nanoprism shape consi...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/138505 |
| _version_ | 1811695038973870080 |
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| author | Eng, Jia Wen |
| author2 | Xue Can |
| author_facet | Xue Can Eng, Jia Wen |
| author_sort | Eng, Jia Wen |
| collection | NTU |
| description | In this project, I have produced silver solution using a seed-mediated method. This is followed by photosynthesizing the silver nanoparticles with high intensity illuminator to obtain silver nanoprisms. Subsequently, I coated a layer of gold as its shell (Ag@Au) to preserve the nanoprism shape considering that gold is highly stable and unreactive. Then, the Ag@Au core-shell nanostructure is further coated with titanium dioxide (Ag@Au@TiO2). The purpose of titanium oxide coating allows photocatalytic reaction to take place. Titanium coating allows hot electrons generated from silver to have a longer life span by trapping them within its metallic portion. This study will mainly focus on the photocatalytic reaction of the hot electrons entering the conduction band of TiO2, to reduce the adsorbed O2 into reactive species that can eventually oxidise methylene blue (MB) dye. The effectiveness will be highlighted through the UV spectrum to determine the successful oxidation of the dye (MB) known to be present in wastewater, by showing a less colour concentrated solution and a descending peak intensity. The catalyst will also be compared with other variables such as a control MB, Ag nanoprism and Ag@Au core-shell nanostructure. |
| first_indexed | 2024-10-01T07:17:07Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/138505 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:17:07Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1385052023-03-04T15:44:44Z Preparation and photocatalytic applications of plasmonic metal nanostructures Eng, Jia Wen Xue Can School of Materials Science and Engineering CXUE@ntu.edu.sg Engineering::Materials In this project, I have produced silver solution using a seed-mediated method. This is followed by photosynthesizing the silver nanoparticles with high intensity illuminator to obtain silver nanoprisms. Subsequently, I coated a layer of gold as its shell (Ag@Au) to preserve the nanoprism shape considering that gold is highly stable and unreactive. Then, the Ag@Au core-shell nanostructure is further coated with titanium dioxide (Ag@Au@TiO2). The purpose of titanium oxide coating allows photocatalytic reaction to take place. Titanium coating allows hot electrons generated from silver to have a longer life span by trapping them within its metallic portion. This study will mainly focus on the photocatalytic reaction of the hot electrons entering the conduction band of TiO2, to reduce the adsorbed O2 into reactive species that can eventually oxidise methylene blue (MB) dye. The effectiveness will be highlighted through the UV spectrum to determine the successful oxidation of the dye (MB) known to be present in wastewater, by showing a less colour concentrated solution and a descending peak intensity. The catalyst will also be compared with other variables such as a control MB, Ag nanoprism and Ag@Au core-shell nanostructure. Bachelor of Engineering (Materials Engineering) 2020-05-07T10:08:28Z 2020-05-07T10:08:28Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/138505 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials Eng, Jia Wen Preparation and photocatalytic applications of plasmonic metal nanostructures |
| title | Preparation and photocatalytic applications of plasmonic metal nanostructures |
| title_full | Preparation and photocatalytic applications of plasmonic metal nanostructures |
| title_fullStr | Preparation and photocatalytic applications of plasmonic metal nanostructures |
| title_full_unstemmed | Preparation and photocatalytic applications of plasmonic metal nanostructures |
| title_short | Preparation and photocatalytic applications of plasmonic metal nanostructures |
| title_sort | preparation and photocatalytic applications of plasmonic metal nanostructures |
| topic | Engineering::Materials |
| url | https://hdl.handle.net/10356/138505 |
| work_keys_str_mv | AT engjiawen preparationandphotocatalyticapplicationsofplasmonicmetalnanostructures |