Graphene quantum dots derived from carbon fibers for oxidation of dopamine

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• 作者：Aibing Chen 陈爱兵 ; Chaochao Zhao ; Yifeng Yu…
• 关键词：Key wordsgraphene quantum dots ; photoluminescence ; electrochemistry ; dopamine ; carbon fiber
• 刊名：Journal of Wuhan University of Technology-Mater. Sci. Ed.
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：31
• 期：6
• 页码：1294-1297
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general;
• 出版者：Wuhan University of Technology
• ISSN：1993-0437
• 卷排序：31

文摘

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.