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Capping nanoparticles with graphene quantum dots for enhanced thermoelectric performance.

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.

SUBMITTER: Liang Y

PROVIDER: S-EPMC5497257 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature

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Capping nanoparticles with graphene quantum dots for enhanced thermoelectric performance.

Liang Yuantong Y Lu Chenguang C Ding Defang D Zhao Man M Wang Dawei D Hu Chao C Qiu Jieshan J Xie Gang G Tang Zhiyong Z

Chemical science 20150413 7

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 ene ...[more]

PMID: 28717467

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