Copper oxide nanostructures with nanoneedles shape obtained by direct reaction with nitrogen-doped carbon quantum dots: development of an electrochemical sensor to glyphosate
Tipo
Artigo
Data de publicação
2023
Periódico
Journal of Materials Science
Citações (Scopus)
10
Autores
Tiba D.Y.
Name L.L.
Landers R.
Canevari T.C.
Name L.L.
Landers R.
Canevari T.C.
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© 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.This work describes the synthesis, characterization, and application of nanoneedle-shaped CuONPS/Cdot(N) nanostructures obtained by direct reaction between Cu(NO3)2 and nitrogen-doped carbon quantum dots (Cdot(N)). The CDot(N) obtained from oleylamine using the electrochemical technique of chronoamperometry was used as catalysts and directing agents in synthesizing CuONPS/Cdot(N) nanostructures. The CuONPS/Cdot(N) nanostructures were characterized using transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet spectroscopy (UV–Vis), infrared spectroscopy (FTIR), and electrochemical techniques. HR-TEM and XPS analysis has shown that CuONPS/Cdot(N) nanostructures are constituted for both CuO and Cu2O nanospecies. The printed carbon electrode was modified with CuONPS/Cdot(N) nanostructures. It was used to determine the pesticide glyphosate in PBS, pH 5.5, at a potential of E = − 0.02 V, using the differential pulse voltammetry technique with a detection limit of 11.6 nMol L−1. The printed carbon electrode was modified with CuNPS/Cdot(N) nanostructures and was also used to determine pesticides in real water samples with good performance. Graphical Abstract: [Figure not available: see fulltext.]
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Assuntos Scopus
Carbon electrode , Carbon quantum dots , Direct reactions , Electrochemical techniques , FTIR , Glyphosates , Infrared: spectroscopy , Nanospecies , Nitrogen-doped carbons , ]+ catalyst