Electrochemical co-deposition of reduced graphene oxide-gold nanocomposite on an ITO substrate and its application in the detection of dopamine

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• 作者：Chaoyi Jiang ; Xiangzhou Zeng ; Bijun Wu ; Qiao Zeng ; Wenhui Pang…
• 关键词：electrodeposition ; graphene ; gold ; nanocomposite films
• 刊名：Science China Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：60
• 期：1
• 页码：151-156
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry/Food Science, general;
• 出版者：Science China Press
• ISSN：1869-1870
• 卷排序：60

文摘

The simultaneous deposition of rGO and gold nanostructures has been achieved by electrodeposition from mixed solutions containing graphene oxide (GO) and a gold precursor. Scanning electron microscope (SEM), Raman spectroscopy and atomic force microscopy (AFM) have been employed to reveal the morphology, uniformity and practical stability of the nanocomposite films on the indium tin oxide (ITO) substrate. The AFM data showed heights of tens of nanometers of the nanocomposite, suggesting that multilayers of rGO with gold nanoparticles had been formed as a result of the electrochemical co-deposition. Differential pulse voltammetry (DPV), as a widely used analytical technique, has been carried out on the rGO-Au/ITO electrode for the quantitative detection of dopamine (DA). The detection limit (S/N=3)for the determination of DA was evaluated as 0.6 μM.