Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/162773
Title: | Graphene quantum dot enabled interlayer spacing and electronic structure regulation of single-atom doped MoS₂ for efficient alkaline hydrogen evolution | Authors: | Gong, Jun Zhang, Zheye Xi, Shibo Wang, Wenjun Lu, Jianmei Chen, Peng |
Keywords: | Engineering::Chemical engineering | Issue Date: | 2023 | Source: | Gong, J., Zhang, Z., Xi, S., Wang, W., Lu, J. & Chen, P. (2023). Graphene quantum dot enabled interlayer spacing and electronic structure regulation of single-atom doped MoS₂ for efficient alkaline hydrogen evolution. Chemical Engineering Journal, 451, 138951-. https://dx.doi.org/10.1016/j.cej.2022.138951 | Project: | AMEIRG18-0016 | Journal: | Chemical Engineering Journal | Abstract: | Interlayer engineering of two-dimensional (2D) materials is believed to be a key to enhance their performance for catalysis and other applications. Herein, molybdenum disulfide intercalated with heteroatom-doped graphene quantum dots and individually dispersed Co atoms (GQD/Co-MoS2) is readily synthesized by a one-pot hydrothermal reaction. With better long-term stability, GQD/Co-MoS2 shows comparable catalytic performance as commercial Pt/C catalyst for hydrogen evolution reaction in alkaline medium at low current densities (overpotential of 53 vs 44 mV at 10 mA cm−2) and outperforms Pt/C at high current densities (106 vs 172 mV at 100 mA cm−2). Based on both experimental and theoretical investigations, the outstanding performance is mainly attributed to the enlarged interlayer spacing and electronic coupling at the 0D/2D van der Waals heterojunctions between GQDs and Co-doped MoS2. In principle, a variety of GQD intercalated 2D materials with atomic doping of one or more metallic elements can be similarly synthesized for diverse applications. | URI: | https://hdl.handle.net/10356/162773 | ISSN: | 1385-8947 | DOI: | 10.1016/j.cej.2022.138951 | DOI (Related Dataset): | 10.21979/N9/MFQSBN | Schools: | School of Chemical and Biomedical Engineering | Rights: | © 2022 Elsevier B.V. All rights reserved. This paper was published in Chemical Engineering Journal and is made available with permission of Elsevier B.V. | Fulltext Permission: | embargo_20250108 | Fulltext Availability: | With Fulltext |
Appears in Collections: | SCBE Journal Articles |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Graphene quantum dot enabled interlayer spacing and electronic structure regulation of single-atom doped MoS2 for efficient alkaline hydrogen evolution.pdf Until 2025-01-08 | 1.32 MB | Adobe PDF | Under embargo until Jan 08, 2025 |
SCOPUSTM
Citations
50
9
Updated on Mar 24, 2024
Web of ScienceTM
Citations
50
3
Updated on Oct 30, 2023
Page view(s)
115
Updated on Mar 28, 2024
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.