Graphene–ZnS quantum dot nanocomposites produced by solvothermal route

Graphene–ZnS (G–ZnS) quantum dots nanocomposites were prepared by one pot solvothermal route. Graphite oxide (GO) was well dispersed in dimethyl sulfoxide (DMSO) solution of ions Zn 2+, where DMSO acts as a sulphide source as well as reducing agent, resulting in the formation of graphene–ZnS quantum...

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Bibliographic Details
Published in:Materials letters 2011-08, Vol.65 (15), p.2518-2521
Main Authors: Li, Yongfeng, Liu, Yanzhen, Shen, Wenzhong, Yang, Yonggang, Wen, Yuefang, Wang, Maozhang
Format: Article
Language:English
Subjects:
dimethyl sulfoxide
Graphene
ions
Luminescence
Nanocomposites
Nanomaterials
Nanostructure
Oxides
Quantum dots
Solvothermal
Sulfides
zinc
Zinc sulfides
ZnS
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Summary:Graphene–ZnS (G–ZnS) quantum dots nanocomposites were prepared by one pot solvothermal route. Graphite oxide (GO) was well dispersed in dimethyl sulfoxide (DMSO) solution of ions Zn 2+, where DMSO acts as a sulphide source as well as reducing agent, resulting in the formation of graphene–ZnS quantum dot nanocomposites and simultaneous reduction of GO to graphene nanosheets. The size of the ZnS QDs in G–ZnS is around 10 nm, and the large 2D flexible atom-thin layer of graphene makes it easier to control the distribution of ZnS. The resulting G–ZnS QDs display a well-defined excitonic emission feature by luminescence analysis. [Display omitted]
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2011.05.055