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Issue 34, 2015
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A new mild, clean and highly efficient method for the preparation of graphene quantum dots without by-products

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Abstract

We demonstrated that graphene oxide (GO) can be oxidized and cut into graphene quantum dots (GQDs) by hydroxyl radicals (˙OH), which is obtained by the catalytic decomposition of hydrogen peroxide (H2O2) with a tungsten oxide nanowire (W18O49) catalyst. The clean oxidizing agent (H2O2) and the solid catalyst lead to a simple GQD preparing method without any by-products. The obtained GQD aqueous solution can be directly applied to fluorescence imaging in vitro without any further purification. The effect of the W18O49 catalyst on the ˙OH formation is discussed, and the size of GQDs can be controlled via changing the concentration of hydroxyl radicals.

Graphical abstract: A new mild, clean and highly efficient method for the preparation of graphene quantum dots without by-products

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Supplementary files

Article information


Submitted
08 Jun 2015
Accepted
29 Jul 2015
First published
29 Jul 2015

J. Mater. Chem. B, 2015,3, 6871-6876
Article type
Communication
Author version available

A new mild, clean and highly efficient method for the preparation of graphene quantum dots without by-products

C. Zhu, S. Yang, G. Wang, R. Mo, P. He, J. Sun, Z. Di, Z. Kang, N. Yuan, J. Ding, G. Ding and X. Xie, J. Mater. Chem. B, 2015, 3, 6871
DOI: 10.1039/C5TB01093D

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