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Electrochemical synthesis of functional nanowires
Semiconducting, metal, and multi-segmented nanowires of 200 nm diameters with lengths up to 10_m were synthesized through electrochemical deposition in the pores of anodic aluminium oxide (AAO) and polycarbonate track-etched (PCTE) templates. With the work focusing on CdSe nanowires, results from th...
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| Format: | Thesis |
| Language: | English |
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Department of Physics
2016
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| _version_ | 1867613216420397056 |
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| access_status_str | Open Access |
| author | Fawzy, Mirette |
| author2 | Blumenthal, Mark |
| author_browse | Blumenthal, Mark Fawzy, Mirette |
| author_facet | Blumenthal, Mark Fawzy, Mirette |
| author_sort | Fawzy, Mirette |
| collection | Thesis |
| description | Semiconducting, metal, and multi-segmented nanowires of 200 nm diameters with lengths up to 10_m were synthesized through electrochemical deposition in the pores of anodic aluminium oxide (AAO) and polycarbonate track-etched (PCTE) templates. With the work focusing on CdSe nanowires, results from the cyclic electrodeposition/stripping method was reported with different deposition conditions(potential range, solution, and scan rate). The stoichiometric deposition of CdSe nanowires was confirmed by energy dispersive spectroscopy (EDS) analysis, with an average Cd:Se atomic percentage of0.92. Structural characterizations were done on the synthesized nanowires via scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) measurements. Devices with a single CdSe nanowire were made by standard electron beam lithography techniques. Electrical transport measurements were performed on the nanowire arrays as well as single contacted CdSe nanowires. Photo response measurements were also carried out on the samples in the dark and under illumination. The nanowire arrays showed pronounced visible light photoconductivity. As a direct application, a preliminary proof-of-concept photoelectrochemical activity test for water splitting using the synthesized CdSe nanowires was performed in a water/methanol mixture. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/20972 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:37.404Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Physics |
| publisherStr | Department of Physics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/20972 Electrochemical synthesis of functional nanowires Fawzy, Mirette Blumenthal, Mark Physics Semiconducting, metal, and multi-segmented nanowires of 200 nm diameters with lengths up to 10_m were synthesized through electrochemical deposition in the pores of anodic aluminium oxide (AAO) and polycarbonate track-etched (PCTE) templates. With the work focusing on CdSe nanowires, results from the cyclic electrodeposition/stripping method was reported with different deposition conditions(potential range, solution, and scan rate). The stoichiometric deposition of CdSe nanowires was confirmed by energy dispersive spectroscopy (EDS) analysis, with an average Cd:Se atomic percentage of0.92. Structural characterizations were done on the synthesized nanowires via scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) measurements. Devices with a single CdSe nanowire were made by standard electron beam lithography techniques. Electrical transport measurements were performed on the nanowire arrays as well as single contacted CdSe nanowires. Photo response measurements were also carried out on the samples in the dark and under illumination. The nanowire arrays showed pronounced visible light photoconductivity. As a direct application, a preliminary proof-of-concept photoelectrochemical activity test for water splitting using the synthesized CdSe nanowires was performed in a water/methanol mixture. 2016-07-28T12:23:42Z 2016-07-28T12:23:42Z 2016 Master Thesis Masters MSc http://hdl.handle.net/11427/20972 eng application/pdf Department of Physics Faculty of Science University of Cape Town |
| spellingShingle | Physics Fawzy, Mirette Electrochemical synthesis of functional nanowires |
| thesis_degree_str | Master's |
| title | Electrochemical synthesis of functional nanowires |
| title_full | Electrochemical synthesis of functional nanowires |
| title_fullStr | Electrochemical synthesis of functional nanowires |
| title_full_unstemmed | Electrochemical synthesis of functional nanowires |
| title_short | Electrochemical synthesis of functional nanowires |
| title_sort | electrochemical synthesis of functional nanowires |
| topic | Physics |
| url | http://hdl.handle.net/11427/20972 |
| work_keys_str_mv | AT fawzymirette electrochemicalsynthesisoffunctionalnanowires |