Continuous hydrothermal flow synthesis of graphene quantum dots

Suela Kellici; John Acord; Katherine E. Moore; Nicholas P. Power; Vesna Middelkoop; David J. Morgan; Tobias Heil; Paolo Coppo; Ioan-Alexandru Baragau; Colin L. Raston

doi:10.1039/c8re00158h

Continuous hydrothermal flow synthesis of graphene quantum dots

Suela Kellici, John Acord, Katherine E. Moore, Nicholas P. Power, Vesna Middelkoop, David J. Morgan, Tobias Heil, Paolo Coppo, Ioan-Alexandru Baragau, Colin L. Raston

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Green fluorescent graphene quantum dots (GQD) have been synthesized via hydrothermal fragmentation using a continuous hydrothermal flow synthesis (CHFS) process as a single, rapid and environmentally benign method. This is in the presence of p-phosphonic acid calix[4]arene which enhances the optical properties of the graphene quantum dots through surface functionalization, with photoluminescence quantum yields of up to 4.5%. Potential environmental impact of a lab-scale supercritical CHFS process compared with that of conventional batch processing of GQDs has been assessed using the method of the International Reference Life Cycle Data System (ILCD).

Original language	English
Pages (from-to)	949-958
Number of pages	10
Journal	Reaction Chemistry and Engineering
Volume	3
Issue number	6
DOIs	https://doi.org/10.1039/c8re00158h
Publication status	Published - 1 Dec 2018

Keywords

graphene dots
hydrothermal fragmentation
ILCD
photoluminescence

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AU - Kellici, Suela

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AU - Moore, Katherine E.

AU - Power, Nicholas P.

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AU - Morgan, David J.

AU - Heil, Tobias

AU - Coppo, Paolo

AU - Baragau, Ioan-Alexandru

AU - Raston, Colin L.

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N2 - Green fluorescent graphene quantum dots (GQD) have been synthesized via hydrothermal fragmentation using a continuous hydrothermal flow synthesis (CHFS) process as a single, rapid and environmentally benign method. This is in the presence of p-phosphonic acid calix[4]arene which enhances the optical properties of the graphene quantum dots through surface functionalization, with photoluminescence quantum yields of up to 4.5%. Potential environmental impact of a lab-scale supercritical CHFS process compared with that of conventional batch processing of GQDs has been assessed using the method of the International Reference Life Cycle Data System (ILCD).

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KW - photoluminescence

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Continuous hydrothermal flow synthesis of graphene quantum dots

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Keywords

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