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Title: van der Waals heterojunction between a bottom-up grown doped graphene quantum dot and graphene for photoelectrochemical water splitting
Authors: Yan, Yibo
Zhai, Dong
Liu, Yi
Gong, Jun
Chen, Jie
Zan, Ping
Zeng, Zhiping
Li, Shuzhou
Huang, Wei
Chen, Peng
Keywords: Engineering::Chemical engineering
Issue Date: 2020
Source: 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
Journal: ACS nano
Abstract: 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.
ISSN: 1936-0851
DOI: 10.1021/acsnano.9b09554
Rights: 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
Fulltext Permission: embargo_20210204
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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