Graphene quantum dots derived from carbon fibers for oxidation of dopamine

Aibing Chen; Chaochao Zhao; Yifeng Yu; Jinghe Yang

doi:10.1007/s11595-016-1529-y

Journal of Wuhan University of Technology Materials Science Edition ›› 2016, Vol. 31 ›› Issue (6) : 1294 -1297. DOI: 10.1007/s11595-016-1529-y

Advanced Materials

Graphene quantum dots derived from carbon fibers for oxidation of dopamine

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Abstract

We demonstrated a facile method to prepare photoluminescent graphene quantum dots using commercial polyacrylonitrile (PAN) based carbon fibers (CFs) as the raw material by facile chemical oxidation and exfoliation method. The as-prepared GQDs with uniform size exhibit an excitation-independent photoluminescence behavior, which is similar to other semiconductor quantum dots. Moreover, when acting as catalyst the uniform GQDs have better activity for electrochemical oxidation of dopamine (DA) than graphene oxides (GOs). The square wave voltammogram (SWV) peak values of GQDs are in good correspondence with DA concentrations and can act as a sensor of DA.

Keywords

graphene quantum dots / photoluminescence / electrochemistry / dopamine / carbon fiber

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Aibing Chen, Chaochao Zhao, Yifeng Yu, Jinghe Yang. Graphene quantum dots derived from carbon fibers for oxidation of dopamine. Journal of Wuhan University of Technology Materials Science Edition, 2016, 31(6): 1294-1297 DOI:10.1007/s11595-016-1529-y

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