Reduced Graphene Oxide/Carbon Nanotube/Gold Nanoparticles Nanocomposite Functionalized Screen‐Printed Electrode for Sensitive Electrochemical Detection of Endocrine Disruptor Bisphenol A | Zendy

Wang YiCheng | Zendy; Cokeliler Dilek | Zendy; Gunasekaran Sundaram | Zendy

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Reduced Graphene Oxide/Carbon Nanotube/Gold Nanoparticles Nanocomposite Functionalized Screen‐Printed Electrode for Sensitive Electrochemical Detection of Endocrine Disruptor Bisphenol A

Author(s) -

Wang YiCheng,

Cokeliler Dilek,

Gunasekaran Sundaram

Publication year - 2015

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201500120

Subject(s) - graphene , differential pulse voltammetry , materials science , nanocomposite , carbon nanotube , detection limit , colloidal gold , electrode , hydroquinone , electrochemical gas sensor , bisphenol a , oxide , nanoparticle , electrochemistry , cyclic voltammetry , chemical engineering , nanotechnology , chemistry , chromatography , organic chemistry , epoxy , composite material , engineering , metallurgy

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 reduced to RGO/CNT on SPE at room temperature. AuNPs were then electrochemically deposited in situ on RGO/CNT‐modified SPE. Under optimized conditions, differential pulse voltammetry (DPV) produced linear current responses for BPA concentrations of 1.45 to 20 and 20 to 1,490 nM, with a calculated detection limit of an ultralow 800 pM. The sensor response was unaffected by the presence of interferents such as phenol, p ‐nitrophenol, pyrocatechol, 2,4‐dinitrophenol, and hydroquinone.

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