One-Step Synthesis of Large-Scale Graphene Film Doped with Gold Nanoparticles at Liquid鈥揂ir Interface for Electrochemistry and Raman Detection Applications

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• 作者：Panpan Zhang ; Ying Huang ; Xin Lu ; Siyu Zhang ; Jingfeng Li ; Gang Wei ; Zhiqiang Su
• 刊名：Langmuir
• 出版年：2014
• 出版时间：July 29, 2014
• 年：2014
• 卷：30
• 期：29
• 页码：8980-8989
• 全文大小：598K
• ISSN：1520-5827

文摘

We demonstrated a facile one-step synthesis strategy for the preparation of a large-scale reduced graphene oxide multilayered film doped with gold nanoparticles (RGO/AuNP film) and applied this film as functional nanomaterials for electrochemistry and Raman detection applications. The related applications of the fabricated RGO/AuNP film in electrochemical nonenzymatic H₂O₂ biosensor, electrochemical oxygen reduction reaction (ORR), and surface-enhanced Raman scattering (SERS) detection were investigated. Electrochemical data indicate that the H₂O₂ biosensor fabricated by RGO/AuNP film shows a wide linear range, low limitation of detection, high selectivity, and long-term stability. In addition, it was proved that the created RGO/AuNP film also exhibits excellent ORR electrochemical catalysis performance. The created RGO/AuNP film, when serving as SERS biodetection platform, presents outstanding performances in detecting 4-aminothiophenol with an enhancement factor of approximately 5.6 脳 10⁵ as well as 2-thiouracil sensing with a low concentration to 1 渭M. It is expected that this facile strategy for fabricating large-scale graphene film doped with metallic nanoparticles will spark inspirations in preparing functional nanomaterials and further extend their applications in drug delivery, wastewater purification, and bioenergy.