Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction
The ability to construct discrete colloidal clusters (CCs) as complex as molecular clusters is limited due to the lack of available colloidal building blocks and specific directional bonds. Here, we explore a strategy to organize anisotropic Prussian blue analog nanocrystals (NCs) toward CCs with op...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/143945 |
| _version_ | 1811696052676329472 |
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| author | Nai, Jianwei Wang, Sibo Lou, David Xiong Wen |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Nai, Jianwei Wang, Sibo Lou, David Xiong Wen |
| author_sort | Nai, Jianwei |
| collection | NTU |
| description | The ability to construct discrete colloidal clusters (CCs) as complex as molecular clusters is limited due to the lack of available colloidal building blocks and specific directional bonds. Here, we explore a strategy to organize anisotropic Prussian blue analog nanocrystals (NCs) toward CCs with open and highly ordered structures, experimentally realizing colloidal analogs to zeolitic clathrate structures. The directional interactions are derived from either crystallographic or morphological anisotropy of the NCs and achieved by the interplay of epitaxial growth, oriented attachment, and local packing. We attribute these interparticle interactions to enthalpic and entropic valences that imitate hybridized atomic orbitals of sp3d2 octahedron and sp3d3f cube. Benefiting from the ordered multilevel porous structures, the obtained CCs exhibit greatly enhanced catalytic activity for CO2 photoreduction. Our work offers some fundamental insights into directional bonding among NCs and opens an avenue that promises access to unique CCs with unprecedented structures and applications. |
| first_indexed | 2024-10-01T07:33:14Z |
| format | Journal Article |
| id | ntu-10356/143945 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:33:14Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1439452023-12-29T06:52:24Z Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction Nai, Jianwei Wang, Sibo Lou, David Xiong Wen School of Chemical and Biomedical Engineering Engineering::Chemical engineering Colloidal Clusters CO2 Photoreduction The ability to construct discrete colloidal clusters (CCs) as complex as molecular clusters is limited due to the lack of available colloidal building blocks and specific directional bonds. Here, we explore a strategy to organize anisotropic Prussian blue analog nanocrystals (NCs) toward CCs with open and highly ordered structures, experimentally realizing colloidal analogs to zeolitic clathrate structures. The directional interactions are derived from either crystallographic or morphological anisotropy of the NCs and achieved by the interplay of epitaxial growth, oriented attachment, and local packing. We attribute these interparticle interactions to enthalpic and entropic valences that imitate hybridized atomic orbitals of sp3d2 octahedron and sp3d3f cube. Benefiting from the ordered multilevel porous structures, the obtained CCs exhibit greatly enhanced catalytic activity for CO2 photoreduction. Our work offers some fundamental insights into directional bonding among NCs and opens an avenue that promises access to unique CCs with unprecedented structures and applications. Ministry of Education (MOE) National Research Foundation (NRF) Published version X.W.L. acknowledges the funding support from the National Research Foundation (NRF) of Singapore via the NRF investigatorship (NRF-NRFI2016-04) and the Ministry of Education of Singapore through Academic Research Fund (AcRF) Tier-1 Funding (M4011783, RG5/17) and Tier-2 Funding (M4020386, MOE2017-T2-003). 2020-10-02T03:44:41Z 2020-10-02T03:44:41Z 2019 Journal Article Nai, J., Wang, S., & Lou, D. X. W. (2019). Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction. Science Advances, 5(12), eaax5095-. doi:10.1126/sciadv.aax5095 2375-2548 https://hdl.handle.net/10356/143945 10.1126/sciadv.aax5095 31853497 12 5 eaax5095 en Science Advances © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). application/pdf |
| spellingShingle | Engineering::Chemical engineering Colloidal Clusters CO2 Photoreduction Nai, Jianwei Wang, Sibo Lou, David Xiong Wen Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction |
| title | Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction |
| title_full | Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction |
| title_fullStr | Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction |
| title_full_unstemmed | Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction |
| title_short | Ordered colloidal clusters constructed by nanocrystals with valence for efficient CO2 photoreduction |
| title_sort | ordered colloidal clusters constructed by nanocrystals with valence for efficient co2 photoreduction |
| topic | Engineering::Chemical engineering Colloidal Clusters CO2 Photoreduction |
| url | https://hdl.handle.net/10356/143945 |
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