Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells
Platinum (Pt) nanocrystals have demonstrated to be an effective catalyst in many heterogeneous catalytic processes. However, pioneer facets with highest activity have been reported differently for various reaction systems. Although Pt has been the most important counter electrode material for dye-se...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Nature Publishing Group
2013
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/3063 |
| _version_ | 1848744127783501824 |
|---|---|
| author | Zhang, B. Wang, D. Hou, Y. Yang, S. Yang, X. Zhong, J. Liu, Jian Wang, H. Hu, P. Zhao, H. Yang, H. |
| author_facet | Zhang, B. Wang, D. Hou, Y. Yang, S. Yang, X. Zhong, J. Liu, Jian Wang, H. Hu, P. Zhao, H. Yang, H. |
| author_sort | Zhang, B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Platinum (Pt) nanocrystals have demonstrated to be an effective catalyst in many heterogeneous catalytic processes. However, pioneer facets with highest activity have been reported differently for various reaction systems. Although Pt has been the most important counter electrode material for dye-sensitized solar cells (DSCs), suitable atomic arrangement on the exposed crystal facet of Pt for triiodide reduction is still inexplicable. Using density functional theory, we have investigated the catalytic reaction processes of triiodide reduction over {100}, {111} and {411} facets, indicating that the activity follows the order of Pt(111) > Pt(411) > Pt(100). Further, Pt nanocrystals mainly bounded by {100}, {111} and {411} facets were synthesized and used as counter electrode materials for DSCs. The highest photovoltaic conversion efficiency of Pt(111) in DSCs confirms the predictions of the theoretical study. These findings have deepened the understanding of the mechanism of triiodide reduction at Pt surfaces and further screened the best facet for DSCs successfully. |
| first_indexed | 2025-11-14T05:56:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-3063 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T05:56:32Z |
| publishDate | 2013 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-30632017-09-13T14:33:45Z Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells Zhang, B. Wang, D. Hou, Y. Yang, S. Yang, X. Zhong, J. Liu, Jian Wang, H. Hu, P. Zhao, H. Yang, H. electron transfer electrocatalysis solar cells nanoparticles Platinum (Pt) nanocrystals have demonstrated to be an effective catalyst in many heterogeneous catalytic processes. However, pioneer facets with highest activity have been reported differently for various reaction systems. Although Pt has been the most important counter electrode material for dye-sensitized solar cells (DSCs), suitable atomic arrangement on the exposed crystal facet of Pt for triiodide reduction is still inexplicable. Using density functional theory, we have investigated the catalytic reaction processes of triiodide reduction over {100}, {111} and {411} facets, indicating that the activity follows the order of Pt(111) > Pt(411) > Pt(100). Further, Pt nanocrystals mainly bounded by {100}, {111} and {411} facets were synthesized and used as counter electrode materials for DSCs. The highest photovoltaic conversion efficiency of Pt(111) in DSCs confirms the predictions of the theoretical study. These findings have deepened the understanding of the mechanism of triiodide reduction at Pt surfaces and further screened the best facet for DSCs successfully. 2013 Journal Article http://hdl.handle.net/20.500.11937/3063 10.1038/srep01836 Nature Publishing Group fulltext |
| spellingShingle | electron transfer electrocatalysis solar cells nanoparticles Zhang, B. Wang, D. Hou, Y. Yang, S. Yang, X. Zhong, J. Liu, Jian Wang, H. Hu, P. Zhao, H. Yang, H. Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| title | Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| title_full | Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| title_fullStr | Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| title_full_unstemmed | Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| title_short | Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| title_sort | facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells |
| topic | electron transfer electrocatalysis solar cells nanoparticles |
| url | http://hdl.handle.net/20.500.11937/3063 |