Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst
Plamsmonic photocatalysts have recently garnered much attention due to their enhanced e ciency in converting chemicals to harmless products. Ag/AgCl was the rst of such structure to exhibit the degradation of MO in the presence of visible light1, and since then, many other viable materials...
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| Formato: | Final Year Project (FYP) |
| Idioma: | English |
| Publicado em: |
2013
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| Acesso em linha: | http://hdl.handle.net/10356/53658 |
| _version_ | 1826110295561469952 |
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| author | Neo, Chee Yong |
| author2 | Sum Tze Chien |
| author_facet | Sum Tze Chien Neo, Chee Yong |
| author_sort | Neo, Chee Yong |
| collection | NTU |
| description | Plamsmonic photocatalysts have recently garnered much attention due to their
enhanced e ciency in converting chemicals to harmless products. Ag/AgCl was
the rst of such structure to exhibit the degradation of MO in the presence of visible
light1, and since then, many other viable materials have seen been discovered2.
However, the ultrafast dynamics of such noble metal/semiconductor plasmonic
photocatalysts has not been studied by the community. The ability to identify
charge carrier dynamics is one of key importance in understanding the characteristics
of the material. This study attempts to solve this lack of information by
studying how the morphology and the corresponding charge dynamics of a core
shell cube of AgCl changes when it is exposed to a laser for more than 12h.
From the studies, it is found that Ag structures have formed on the surface due to
migration of elemental Ag onto the surface. This change has lead to an ampli cation
of the e ects of Ag on the surface of AgCl allowing the study of the charge
dynamics of the combined structure. The charge dynamics show results contrary
to current proposed mechanics, but further investigation is needed to verify the
origin of the charge dynamics observed. |
| first_indexed | 2024-10-01T02:32:04Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/53658 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:32:04Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/536582023-02-28T23:11:09Z Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst Neo, Chee Yong Sum Tze Chien School of Physical and Mathematical Sciences DRNTU::Science::Physics::Optics and light Plamsmonic photocatalysts have recently garnered much attention due to their enhanced e ciency in converting chemicals to harmless products. Ag/AgCl was the rst of such structure to exhibit the degradation of MO in the presence of visible light1, and since then, many other viable materials have seen been discovered2. However, the ultrafast dynamics of such noble metal/semiconductor plasmonic photocatalysts has not been studied by the community. The ability to identify charge carrier dynamics is one of key importance in understanding the characteristics of the material. This study attempts to solve this lack of information by studying how the morphology and the corresponding charge dynamics of a core shell cube of AgCl changes when it is exposed to a laser for more than 12h. From the studies, it is found that Ag structures have formed on the surface due to migration of elemental Ag onto the surface. This change has lead to an ampli cation of the e ects of Ag on the surface of AgCl allowing the study of the charge dynamics of the combined structure. The charge dynamics show results contrary to current proposed mechanics, but further investigation is needed to verify the origin of the charge dynamics observed. Bachelor of Science in Physics 2013-06-06T08:18:33Z 2013-06-06T08:18:33Z 2013 2013 Final Year Project (FYP) http://hdl.handle.net/10356/53658 en 53 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Optics and light Neo, Chee Yong Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst |
| title | Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst |
| title_full | Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst |
| title_fullStr | Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst |
| title_full_unstemmed | Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst |
| title_short | Ultrafast dynamics of Ag/AgCl as a plasmonic photocatalyst |
| title_sort | ultrafast dynamics of ag agcl as a plasmonic photocatalyst |
| topic | DRNTU::Science::Physics::Optics and light |
| url | http://hdl.handle.net/10356/53658 |
| work_keys_str_mv | AT neocheeyong ultrafastdynamicsofagagclasaplasmonicphotocatalyst |