Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution
Graphite carbon nitride (g‐C3N4) is a promising candidate for photocatalytic hydrogen production, but only shows moderate activity owing to sluggish photocarrier transfer and insufficient light absorption. Herein, carbon quantum dots (CQDs) implanted in the surface plane of g‐C3N4 nanotubes were syn...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/137740 |
| _version_ | 1824454400413794304 |
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| author | Wang, Yang Liu, Xueqin Liu, Jia Han, Bo Hu, Xiaoqin Yang, Fan Xu, Zuwei Li, Yinchang Jia, Songru Li, Zhen Zhao, Yanli |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wang, Yang Liu, Xueqin Liu, Jia Han, Bo Hu, Xiaoqin Yang, Fan Xu, Zuwei Li, Yinchang Jia, Songru Li, Zhen Zhao, Yanli |
| author_sort | Wang, Yang |
| collection | NTU |
| description | Graphite carbon nitride (g‐C3N4) is a promising candidate for photocatalytic hydrogen production, but only shows moderate activity owing to sluggish photocarrier transfer and insufficient light absorption. Herein, carbon quantum dots (CQDs) implanted in the surface plane of g‐C3N4 nanotubes were synthesized by thermal polymerization of freeze‐dried urea and CQDs precursor. The CQD‐implanted g‐C3N4 nanotubes (CCTs) could simultaneously facilitate photoelectron transport and suppress charge recombination through their specially coupled heterogeneous interface. The electronic structure and morphology were optimized in the CCTs, contributing to greater visible light absorption and a weakened barrier of the photocarrier transfer. As a result, the CCTs exhibited efficient photocatalytic performance under light irradiation with a high H2 production rate of 3538.3 μmol g−1 h−1 and a notable quantum yield of 10.94 % at 420 nm. |
| first_indexed | 2025-02-19T03:21:43Z |
| format | Journal Article |
| id | ntu-10356/137740 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:21:43Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1377402020-04-13T04:01:03Z Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution Wang, Yang Liu, Xueqin Liu, Jia Han, Bo Hu, Xiaoqin Yang, Fan Xu, Zuwei Li, Yinchang Jia, Songru Li, Zhen Zhao, Yanli School of Physical and Mathematical Sciences Science::Chemistry Carbon Quantum Dots Graphite Carbon Nitride Graphite carbon nitride (g‐C3N4) is a promising candidate for photocatalytic hydrogen production, but only shows moderate activity owing to sluggish photocarrier transfer and insufficient light absorption. Herein, carbon quantum dots (CQDs) implanted in the surface plane of g‐C3N4 nanotubes were synthesized by thermal polymerization of freeze‐dried urea and CQDs precursor. The CQD‐implanted g‐C3N4 nanotubes (CCTs) could simultaneously facilitate photoelectron transport and suppress charge recombination through their specially coupled heterogeneous interface. The electronic structure and morphology were optimized in the CCTs, contributing to greater visible light absorption and a weakened barrier of the photocarrier transfer. As a result, the CCTs exhibited efficient photocatalytic performance under light irradiation with a high H2 production rate of 3538.3 μmol g−1 h−1 and a notable quantum yield of 10.94 % at 420 nm. ASTAR (Agency for Sci., Tech. and Research, S’pore) 2020-04-13T04:01:03Z 2020-04-13T04:01:03Z 2018 Journal Article Wang, Y., Liu, X., Liu, J., Han, B., Hu, X., Yang, F., . . . Zhao, Y. (2018). Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution. Angewandte Chemie International Edition, 57(20), 5765-5771. doi:10.1002/anie.201802014 1433-7851 https://hdl.handle.net/10356/137740 10.1002/anie.201802014 29569367 2-s2.0-85045895313 20 57 5765 5771 en Angewandte Chemie International Edition © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Science::Chemistry Carbon Quantum Dots Graphite Carbon Nitride Wang, Yang Liu, Xueqin Liu, Jia Han, Bo Hu, Xiaoqin Yang, Fan Xu, Zuwei Li, Yinchang Jia, Songru Li, Zhen Zhao, Yanli Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution |
| title | Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution |
| title_full | Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution |
| title_fullStr | Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution |
| title_full_unstemmed | Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution |
| title_short | Carbon quantum dot implanted graphite carbon nitride nanotubes : excellent charge separation and enhanced photocatalytic hydrogen evolution |
| title_sort | carbon quantum dot implanted graphite carbon nitride nanotubes excellent charge separation and enhanced photocatalytic hydrogen evolution |
| topic | Science::Chemistry Carbon Quantum Dots Graphite Carbon Nitride |
| url | https://hdl.handle.net/10356/137740 |
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