Mapping surface-modified titania nanoparticles with implications for activity and facet control
The use of surface-directing species and surface additives to alter nanoparticle morphology and physicochemical properties of particular exposed facets has recently been attracting significant attention. However, challenges in their chemical analysis, sometimes at trace levels, and understanding the...
| Main Authors: | , , , , , , , |
|---|---|
| Formato: | Journal article |
| Idioma: | English |
| Publicado: |
Springer Nature
2017
|
| _version_ | 1826267345246486528 |
|---|---|
| author | Peng, Y Hu, Y Chou, H Fu, Y Teixeira, I Zhang, L He, H Tsang, S |
| author_facet | Peng, Y Hu, Y Chou, H Fu, Y Teixeira, I Zhang, L He, H Tsang, S |
| author_sort | Peng, Y |
| collection | OXFORD |
| description | The use of surface-directing species and surface additives to alter nanoparticle morphology and physicochemical properties of particular exposed facets has recently been attracting significant attention. However, challenges in their chemical analysis, sometimes at trace levels, and understanding their roles to elucidate surface structure-activity relationships in optical (solar cells) or (photo)catalytic performance and their removal are significant issues that remain to be solved. Here, we show a detailed analysis of TiO2 facets promoted with surface species (OH, O, SO4, F) with and without post-treatments by 31P adsorbate nuclear magnetic resonance, supported by a range of other characterization tools. We demonstrate that quantitative evaluations of the electronic and structural effects imposed by these surface additives and their removal mechanisms can be obtained, which may lead to the rational control of active TiO2 (001) and (101) facets for a range of applications.Metal oxide nanocrystals can be grown with different facets exposed to give variations in reactivity, but the chemical state of these surfaces is not clear. Here, the authors make use of a phosphine probe molecule allowing the differences in surface chemistry to be mapped by NMR spectroscopy. |
| first_indexed | 2024-03-06T20:52:45Z |
| format | Journal article |
| id | oxford-uuid:3826e29b-4bba-418f-af77-1e6161754f94 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:52:45Z |
| publishDate | 2017 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:3826e29b-4bba-418f-af77-1e6161754f942022-03-26T13:48:16ZMapping surface-modified titania nanoparticles with implications for activity and facet controlJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3826e29b-4bba-418f-af77-1e6161754f94EnglishSymplectic Elements at OxfordSpringer Nature2017Peng, YHu, YChou, HFu, YTeixeira, IZhang, LHe, HTsang, SThe use of surface-directing species and surface additives to alter nanoparticle morphology and physicochemical properties of particular exposed facets has recently been attracting significant attention. However, challenges in their chemical analysis, sometimes at trace levels, and understanding their roles to elucidate surface structure-activity relationships in optical (solar cells) or (photo)catalytic performance and their removal are significant issues that remain to be solved. Here, we show a detailed analysis of TiO2 facets promoted with surface species (OH, O, SO4, F) with and without post-treatments by 31P adsorbate nuclear magnetic resonance, supported by a range of other characterization tools. We demonstrate that quantitative evaluations of the electronic and structural effects imposed by these surface additives and their removal mechanisms can be obtained, which may lead to the rational control of active TiO2 (001) and (101) facets for a range of applications.Metal oxide nanocrystals can be grown with different facets exposed to give variations in reactivity, but the chemical state of these surfaces is not clear. Here, the authors make use of a phosphine probe molecule allowing the differences in surface chemistry to be mapped by NMR spectroscopy. |
| spellingShingle | Peng, Y Hu, Y Chou, H Fu, Y Teixeira, I Zhang, L He, H Tsang, S Mapping surface-modified titania nanoparticles with implications for activity and facet control |
| title | Mapping surface-modified titania nanoparticles with implications for activity and facet control |
| title_full | Mapping surface-modified titania nanoparticles with implications for activity and facet control |
| title_fullStr | Mapping surface-modified titania nanoparticles with implications for activity and facet control |
| title_full_unstemmed | Mapping surface-modified titania nanoparticles with implications for activity and facet control |
| title_short | Mapping surface-modified titania nanoparticles with implications for activity and facet control |
| title_sort | mapping surface modified titania nanoparticles with implications for activity and facet control |
| work_keys_str_mv | AT pengy mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT huy mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT chouh mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT fuy mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT teixeirai mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT zhangl mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT heh mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol AT tsangs mappingsurfacemodifiedtitaniananoparticleswithimplicationsforactivityandfacetcontrol |