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Journal of Nanoparticle Research

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01-11-2014 | Research Paper

Solution-processed anchoring zinc oxide quantum dots on covalently modified graphene oxide

Authors: Zengxing Zhang, Dong Li, Yipu Wang, Xiaojuan Wang, Liping Zou, Qichong Zhang, Binghui Ge

Published in: Journal of Nanoparticle Research | Issue 11/2014

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Abstract

The combination of semiconductor quantum dots (QDs) and graphene or graphene oxide is attracting much attention due to its unique properties and potential applications for optoelectronics or photocatalysts. Here a solution process is reported to firmly anchor zinc oxide QDs on the surface of graphene oxide by a covalent method. The graphene oxide is obtained with a modified Hummers method and slightly reduced and modified with hydrosulfide groups. Zinc oxide QDs are ultrasonically mixed with the modified graphene oxide and then anchored on the surface due to the strong interaction of Zn–S bond. The mixture is analyzed with transmission electron microscopy, energy dispersive spectroscopy, and Raman spectroscopy in details. Further photoluminescence spectroscopy and photoelectrical characterizations exhibit that charge transfer happens between zinc oxide QDs and graphene oxide, indicating it should have potential applications for optoelectronics and photocatalysts.

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Title: Solution-processed anchoring zinc oxide quantum dots on covalently modified graphene oxide
Authors: Zengxing Zhang
Dong Li
Yipu Wang
Xiaojuan Wang
Liping Zou
Qichong Zhang
Binghui Ge
Publication date: 01-11-2014
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 11/2014
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-014-2704-8

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