Please use this identifier to cite or link to this item:
Title: Graphene quantum dots assisted exfoliation of atomically-thin 2D materials and as-formed 0D/2D van der Waals heterojunction for HER
Authors: Gong, Jun
Zhang, Zheye
Zeng, Zhiping
Wang, Wenjun
Kong, Linguxan
Liu, Jiyang
Chen, Peng
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: Gong, J., Zhang, Z., Zeng, Z., Wang, W., Kong, L., Liu, J. & Chen, P. (2021). Graphene quantum dots assisted exfoliation of atomically-thin 2D materials and as-formed 0D/2D van der Waals heterojunction for HER. Carbon, 184, 554-561.
Project: A1983c0025
Journal: Carbon
Abstract: Atomically-thin 2D materials have changed the landscapes of many fields. Their applications however are limited by lack of methods for readily and scalable production with high quality. Herein, a simple strategy is reported to exfoliate pristine single or few-layered 2D materials (MoS2, h-BN, WS2, g-C3N4 microsheets) using bottom-up grown amphiphilic graphene quantum dots (GQDs) as both the intercalation agent and dispersant. Further, it is shown that the as-formed GQD/MoS2 van der Waals heterojunctions (vdWHs) give enhanced performance for electrocatalysis of hydrogen evolution reaction (HER) owing to the synergistic coupling at the 0D/2D heterojunction, delivering a current density of 10 mA cm−2 at a low overpotential of 160 mV with a small Tafel slope of 56.9 mV dec−1. In addition to providing a new method for preparing ultrathin 2D microsheets, this study unleashes the application potential of 2D materials and GQD-based 0D/2D vdWHs as non-precious electrocatalysts.
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2021.08.063
DOI (Related Dataset): 10.21979/N9/UZIK0N
Schools: School of Chemical and Biomedical Engineering 
Rights: © 2021 Elsevier Ltd. All rights reserved. This paper was published in Carbon and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20231107
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

Files in This Item:
File Description SizeFormat 
Manuscript revised Carbon.pdf
  Until 2023-11-07
1.35 MBAdobe PDFUnder embargo until Nov 07, 2023
  Until 2023-11-07
1.68 MBAdobe PDFUnder embargo until Nov 07, 2023

Citations 20

Updated on May 27, 2023

Web of ScienceTM
Citations 10

Updated on Jun 2, 2023

Page view(s)

Updated on Jun 3, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.