van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting
van der Waals heterojunctions (vdWHs) formed between 2D materials have attracted tremendous attention recently due to their extraordinary properties, which cannot be offered by their individual components or other heterojunctions. Intriguing electronic coupling, lowered energy barrier, intimate char...
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sg-ntu-dr.10356-1431612023-12-29T06:47:01Z van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting Yan, Yibo Zhai, Dong Liu, Yi Gong, Jun Chen, Jie Zan, Ping Zeng, Zhiping Li, Shuzhou Huang, Wei Chen, Peng School of Chemical and Biomedical Engineering School of Materials Science and Engineering Innovative Centre for Flexible Devices Engineering::Chemical engineering Van Der Waals Heterojunction Graphene Quantum Dots van der Waals heterojunctions (vdWHs) formed between 2D materials have attracted tremendous attention recently due to their extraordinary properties, which cannot be offered by their individual components or other heterojunctions. Intriguing electronic coupling, lowered energy barrier, intimate charge transfer, and efficient exciton separation occurring at the atomically sharp interface promise their applications in catalysis, which, however, are largely unexplored. Herein, we demonstrate a 0D/2D vdWH between 0D graphene quantum dots (GQDs) and 2D pristine graphene sheets, simply prepared by ultrasonication of graphite powder using GQDs as intercalation surfactant. Such an all-carbon Schottky-diode-like 0D/2D vdWH is employed for the emerging photoelectrochemical catalysis (water splitting) with high performance. The demonstrated low-cost and scalable bottom-up growth of heteroatom-doped GQDs will greatly promote their widespread applications. Moreover, the mechanisms underlying GQD growth and heterojunction-mediated catalysis are revealed both experimentally and theoretically. Accepted version 2020-08-07T01:05:34Z 2020-08-07T01:05:34Z 2020 Journal Article Yan, Y., Zhai, D., Liu, Y., Gong, J., Chen, J., Zan, P., ... Chen, P. (2020). van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting. ACS nano, 14(1), 1185–1195. doi:10.1021/acsnano.9b09554 1936-0851 https://hdl.handle.net/10356/143161 10.1021/acsnano.9b09554 31934740 2-s2.0-85079019002 1 14 1185 1195 en ACS nano This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.9b09554. application/pdf |
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Engineering::Chemical engineering Van Der Waals Heterojunction Graphene Quantum Dots Yan, Yibo Zhai, Dong Liu, Yi Gong, Jun Chen, Jie Zan, Ping Zeng, Zhiping Li, Shuzhou Huang, Wei Chen, Peng van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
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van der Waals heterojunctions (vdWHs) formed between 2D materials have attracted tremendous attention recently due to their extraordinary properties, which cannot be offered by their individual components or other heterojunctions. Intriguing electronic coupling, lowered energy barrier, intimate charge transfer, and efficient exciton separation occurring at the atomically sharp interface promise their applications in catalysis, which, however, are largely unexplored. Herein, we demonstrate a 0D/2D vdWH between 0D graphene quantum dots (GQDs) and 2D pristine graphene sheets, simply prepared by ultrasonication of graphite powder using GQDs as intercalation surfactant. Such an all-carbon Schottky-diode-like 0D/2D vdWH is employed for the emerging photoelectrochemical catalysis (water splitting) with high performance. The demonstrated low-cost and scalable bottom-up growth of heteroatom-doped GQDs will greatly promote their widespread applications. Moreover, the mechanisms underlying GQD growth and heterojunction-mediated catalysis are revealed both experimentally and theoretically. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Yan, Yibo Zhai, Dong Liu, Yi Gong, Jun Chen, Jie Zan, Ping Zeng, Zhiping Li, Shuzhou Huang, Wei Chen, Peng |
format |
Article |
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Yan, Yibo Zhai, Dong Liu, Yi Gong, Jun Chen, Jie Zan, Ping Zeng, Zhiping Li, Shuzhou Huang, Wei Chen, Peng |
author_sort |
Yan, Yibo |
title |
van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
title_short |
van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
title_full |
van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
title_fullStr |
van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
title_full_unstemmed |
van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
title_sort |
van der waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting |
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2020 |
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https://hdl.handle.net/10356/143161 |
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1787136501779267584 |