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A novel electrochemical sensor based on Ag nanoparticles decorated multi-walled carbon nanotubes for applied determination of nitrite
- Source :
- Food Control. 73:1507-1513
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Ag nanoparticles decorated multi-walled carbon nanotubes (MWCNTs) composite was prepared by a simple electrochemical deposition approach. Transmission electron microscopy (TEM) and Energy dispersive spectroscopy (EDS) were employed to characterize the morphology and composition of the composite. The results showed that Ag nanoparticles with an average size approximately 20 nm were uniformly deposited on the MWCNTs surface. The electrochemical performance of the suggested sensor was investigated via differential pulse voltammetry (DPV) and chronoamperometry. Under optimum conditions, the AgNPs/MWCNTs/GCE displayed a rapid current response to nitrite, with the anodic peak current varying linearly with nitrite concentration in the range of 1 μM–100 μM (R = 0.9989) accompanying a low detection limit of 0.095 μM. The long-term stability and good reproducibility were also achieved on the proposed sensor. The determination of nitrite in tap water was studied and showed desirable recovery rate, signifying its possibility for practical application.
- Subjects :
- Detection limit
Materials science
Energy-dispersive X-ray spectroscopy
Nanotechnology
02 engineering and technology
Carbon nanotube
Chronoamperometry
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
law.invention
Electrochemical gas sensor
chemistry.chemical_compound
chemistry
Chemical engineering
law
Differential pulse voltammetry
Nitrite
0210 nano-technology
Food Science
Biotechnology
Subjects
Details
- ISSN :
- 09567135
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- Food Control
- Accession number :
- edsair.doi...........523c55a7db41dc2d2f18933df05f60d2