The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals
The effect of hole localization on photocatalytic activity of Pt-tipped semiconductor nanocrystals is investigated. By tuning the energy balance at the semiconductor–ligand interface, we demonstrate that hydrogen production on Pt sites is efficient only when electron-donating molecules are used for...
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| Other Authors: | , , , , , , , |
| Format: | article |
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2011
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| Online Access: | http://hdl.handle.net/10725/6486 http://dx.doi.org/10.1021/nl201388c http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.acs.org/doi/abs/10.1021/nl201388c |
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| _version_ | 1864513479879163904 |
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| author | Khnayzer, Rony S. |
| author2 | Acharya, Krishna P. O'Connor, Timothy Diedrich, Geoffrey Kirsanova, Maria Klinkova, Anna Roth, Daniel Imbodent, Martene Zamkov, Mikhail |
| author2_role | author author author author author author author author |
| author_facet | Khnayzer, Rony S. Acharya, Krishna P. O'Connor, Timothy Diedrich, Geoffrey Kirsanova, Maria Klinkova, Anna Roth, Daniel Imbodent, Martene Zamkov, Mikhail |
| author_role | author |
| dc.creator.none.fl_str_mv | Khnayzer, Rony S. Acharya, Krishna P. O'Connor, Timothy Diedrich, Geoffrey Kirsanova, Maria Klinkova, Anna Roth, Daniel Imbodent, Martene Zamkov, Mikhail |
| dc.date.none.fl_str_mv | 2011 2017-11-02T14:03:05Z 2017-11-02T14:03:05Z 2017-11-02 |
| dc.identifier.none.fl_str_mv | 1530-6992 http://hdl.handle.net/10725/6486 http://dx.doi.org/10.1021/nl201388c Acharya, K. P., Khnayzer, R. S., O’Connor, T., Diederich, G., Kirsanova, M., Klinkova, A., ... & Zamkov, M. (2011). The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals. Nano letters, 11(7), 2919-2926. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.acs.org/doi/abs/10.1021/nl201388c |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Nano Letters |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | The effect of hole localization on photocatalytic activity of Pt-tipped semiconductor nanocrystals is investigated. By tuning the energy balance at the semiconductor–ligand interface, we demonstrate that hydrogen production on Pt sites is efficient only when electron-donating molecules are used for stabilizing semiconductor surfaces. These surfactants play an important role in enabling an efficient and stable reduction of water by heterostructured nanocrystals as they fill vacancies in the valence band of the semiconductor domain, preventing its degradation. In particular, we show that the energy of oxidizing holes can be efficiently transferred to a ligand moiety, leaving the semiconductor domain intact. This allows reusing the inorganic portion of the “degraded” nanocrystal-ligand system simply by recharging these nanoparticles with fresh ligands. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_d6a36b0963739f6c95dbe070d3f338d4 |
| identifier_str_mv | 1530-6992 Acharya, K. P., Khnayzer, R. S., O’Connor, T., Diederich, G., Kirsanova, M., Klinkova, A., ... & Zamkov, M. (2011). The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals. Nano letters, 11(7), 2919-2926. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/6486 |
| publishDate | 2011 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystalsKhnayzer, Rony S.Acharya, Krishna P.O'Connor, TimothyDiedrich, GeoffreyKirsanova, MariaKlinkova, AnnaRoth, DanielImbodent, MarteneZamkov, MikhailThe effect of hole localization on photocatalytic activity of Pt-tipped semiconductor nanocrystals is investigated. By tuning the energy balance at the semiconductor–ligand interface, we demonstrate that hydrogen production on Pt sites is efficient only when electron-donating molecules are used for stabilizing semiconductor surfaces. These surfactants play an important role in enabling an efficient and stable reduction of water by heterostructured nanocrystals as they fill vacancies in the valence band of the semiconductor domain, preventing its degradation. In particular, we show that the energy of oxidizing holes can be efficiently transferred to a ligand moiety, leaving the semiconductor domain intact. This allows reusing the inorganic portion of the “degraded” nanocrystal-ligand system simply by recharging these nanoparticles with fresh ligands.PublishedN/A2017-11-02T14:03:05Z2017-11-02T14:03:05Z20112017-11-02Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1530-6992http://hdl.handle.net/10725/6486http://dx.doi.org/10.1021/nl201388cAcharya, K. P., Khnayzer, R. S., O’Connor, T., Diederich, G., Kirsanova, M., Klinkova, A., ... & Zamkov, M. (2011). The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals. Nano letters, 11(7), 2919-2926.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttp://pubs.acs.org/doi/abs/10.1021/nl201388cenNano Lettersinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/64862021-03-19T10:03:26Z |
| spellingShingle | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals Khnayzer, Rony S. |
| status_str | publishedVersion |
| title | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| title_full | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| title_fullStr | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| title_full_unstemmed | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| title_short | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| title_sort | The role of hole localization in sacrificial hydrogen production by semiconductor–metal heterostructured nanocrystals |
| url | http://hdl.handle.net/10725/6486 http://dx.doi.org/10.1021/nl201388c http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://pubs.acs.org/doi/abs/10.1021/nl201388c |