Capping nanoparticles with graphene quantum dots for enhanced thermoelectric performance

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Author(s)
Liang, Yuantong
Lu, Chenguang
Ding, Defang
Zhao, Man
Wang, Dawei
Hu, Chao
Qiu, Jieshan
Xie, Gang
Tang, Zhiyong
Griffith University Author(s)
Year published
2015
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Abstract
Graphene quantum dots (GQDs) are shown to serve as phase transfer agents to transfer various types of nanoparticles (NPs) from non-polar to polar solvents. Thorough characterization of the NPs proves complete native ligand exchange. Pellets of this GQD–NP composite show that the GQDs limit the crystal size during spark plasma sintering, yielding enhanced thermoelectric performance compared with NPs exchanged with inorganic ions. A photoluminescence study of the GQD–NP composite also suggests energy transfer from GQDs to NPs.
Journal Title
Chemical Science
Volume
6
Issue
7
DOI
Copyright Statement
© The Author(s) 2015. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
Subject
Chemical sciences
Macromolecular and materials chemistry not elsewhere classified
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