Journal
ELECTROANALYSIS
Volume 27, Issue 11, Pages 2527-2536Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201500120
Keywords
Environmental monitoring; Food safety; Graphene; Electrodeposition; Electrochemical reduction; Electrochemical sensor
Categories
Funding
- National Institute of Food and Agriculture, United States Department of Agriculture [WISO1644]
- UW MRSEC [DMR-1121288]
- UW NSEC [DMR-0832760]
- Wisconsin Distinguished Graduate Fellowship
- Sigma Xi, The Scientific Research Society [497166]
- Technological Research Council of Turkey [2219]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0832760] Funding Source: National Science Foundation
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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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