Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms

Hybrid plasmonic metal / oxide semiconductor core-shell nanostructures have garnered extensive attention owing to their unique properties and limitless potential applications. Past researches tended to overlook the importance of anisotropic nanostructures such as nanoprisms despite their properties...

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Main Author: Yong, Si Jie
Other Authors: Xue Can
Format: Final Year Project
Language:English
Published: 2016
Subjects:
Online Access:http://hdl.handle.net/10356/66404
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-664042023-03-04T15:33:38Z Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms Yong, Si Jie Xue Can School of Materials Science and Engineering DRNTU::Engineering Hybrid plasmonic metal / oxide semiconductor core-shell nanostructures have garnered extensive attention owing to their unique properties and limitless potential applications. Past researches tended to overlook the importance of anisotropic nanostructures such as nanoprisms despite their properties having the potential to be tuned to satisfy different application requirements. The pairing of silver (Ag) and titanium dioxide (TiO2) in a core-shell design is highly promising due to enhanced photocatalytic activities. Prior research revealed that coupling copper oxide with TiO2 could further boost the photocatalytic proficiencies. Hence, novel Ag @ TiO2 @ Cu2O hybrid nanoprisms were synthesised by a four-step approach, beginning with liquid phase synthesis of Ag nanoparticles. Photo-induced transformation of spherical Ag nanoparticles into nanoprisms was adopted before the coating of TiO2 shells and Cu2O nanoparticles respectively. The prepared nanostructures were characterised by transmission electron microscopy (TEM) and UV-Vis analysis. TEM imaging revealed a good size distribution of triangular Ag-core nanoprisms with Cu2O nanoparticles embedded in 6-7 nm-thick TiO2 outer shells. The effects of varying precursor amounts were also investigated via UV-Vis analysis. Two methods were described for the final step of depositing Cu2O nanoparticles. Further studies have to be conducted to determine the stability of the nanoprisms for each route. Additionally, the enhancement of photocatalytic activities, if any, by the presence of Cu2O nanoparticles has to be established. Bachelor of Engineering (Materials Engineering) 2016-04-01T08:44:42Z 2016-04-01T08:44:42Z 2016 Final Year Project (FYP) http://hdl.handle.net/10356/66404 en Nanyang Technological University 28 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering
spellingShingle DRNTU::Engineering
Yong, Si Jie
Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms
description Hybrid plasmonic metal / oxide semiconductor core-shell nanostructures have garnered extensive attention owing to their unique properties and limitless potential applications. Past researches tended to overlook the importance of anisotropic nanostructures such as nanoprisms despite their properties having the potential to be tuned to satisfy different application requirements. The pairing of silver (Ag) and titanium dioxide (TiO2) in a core-shell design is highly promising due to enhanced photocatalytic activities. Prior research revealed that coupling copper oxide with TiO2 could further boost the photocatalytic proficiencies. Hence, novel Ag @ TiO2 @ Cu2O hybrid nanoprisms were synthesised by a four-step approach, beginning with liquid phase synthesis of Ag nanoparticles. Photo-induced transformation of spherical Ag nanoparticles into nanoprisms was adopted before the coating of TiO2 shells and Cu2O nanoparticles respectively. The prepared nanostructures were characterised by transmission electron microscopy (TEM) and UV-Vis analysis. TEM imaging revealed a good size distribution of triangular Ag-core nanoprisms with Cu2O nanoparticles embedded in 6-7 nm-thick TiO2 outer shells. The effects of varying precursor amounts were also investigated via UV-Vis analysis. Two methods were described for the final step of depositing Cu2O nanoparticles. Further studies have to be conducted to determine the stability of the nanoprisms for each route. Additionally, the enhancement of photocatalytic activities, if any, by the presence of Cu2O nanoparticles has to be established.
author2 Xue Can
author_facet Xue Can
Yong, Si Jie
format Final Year Project
author Yong, Si Jie
author_sort Yong, Si Jie
title Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms
title_short Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms
title_full Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms
title_fullStr Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms
title_full_unstemmed Preparation of plasmonic metal / semiconductor hybrid nanostructures : Ag @ TiO2 @ Cu2O nanoprisms
title_sort preparation of plasmonic metal / semiconductor hybrid nanostructures : ag @ tio2 @ cu2o nanoprisms
publishDate 2016
url http://hdl.handle.net/10356/66404
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