Reduced Graphene Oxide/Carbon Nanotube/Gold Nanoparticles Nanocomposite Functionalized Screen‐Printed Electrode for Sensitive Electrochemical Detection of Endocrine Disruptor Bisphenol A
作者： Yi-Cheng Wang , Dilek Cokeliler , Sundaram Gunasekaran
关键词: Graphene 、 Colloidal gold 、 Chemical engineering 、 Differential pulse voltammetry 、 Electrode 、 Nanocomposite 、 Carbon nanotube 、 Nanotechnology 、 Materials science 、 Oxide 、 Electrochemical gas sensor
摘要: We fabricated a highly sensitive electrochemical sensor for the determination of bisphenol A (BPA) in aqueous solution by using reduced graphene oxide (RGO), carbon nanotubes (CNT), and gold nanoparticles (AuNPs)-modified screen-printed electrode (SPE). GO/CNT nanocomposite was directly to RGO/CNT on SPE at room temperature. AuNPs were then electrochemically deposited situ RGO/CNT-modified SPE. Under optimized conditions, differential pulse voltammetry (DPV) produced linear current responses BPA concentrations 1.45 20 1,490 nM, with calculated detection limit an ultralow 800 pM. The response unaffected presence interferents such as phenol, p-nitrophenol, pyrocatechol, 2,4-dinitrophenol, hydroquinone.
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