PdNPs/carbon dots/silica hybrid nanostructures: the development of an electrochemical sensor for simultaneous determination of dopamine and serotonin in real samples

Tipo
Artigo
Data de publicação
2023
Periódico
Journal of Nanoparticle Research
Citações (Scopus)
3
Autores
Ferreira J.H.A.
Peres R.M.
Nakamura M.
Toma H.E.
Canevari T.C.
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Resumo
© 2022, The Author(s), under exclusive licence to Springer Nature B.V.This work describes the synthesis, characterization, and electrochemical application of hybrid PdNPs/carbon dots/silica nanostructures, in which palladium nanoparticles (PdNP) were directly obtained through the carbon dots reduction by only one step. These nanostructures were characterized by UV–vis spectroscopy, FTIR with ATR module, HR-TEM, SEM, AFM, XPS, and electrochemical impedance. A non-enzymatic biosensor was prepared by dispersing the PdNPs/carbon dots/silica nanostructures on a printed carbon electrode, exhibiting excellent electrocatalytic activity for the simultaneous determination of dopamine and serotonin with a detection limit of 36 and 33 nmol L−1, respectively. The detection of dopamine and serotonin was also performed in real samples and did not suffer significant interference from ascorbic acid (AA) or uric acid (UA). Graphical Abstract: [Figure not available: see fulltext.].
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Assuntos Scopus
Carbon dots , Dopamine , Hybrid nanostructures , Palladium nanoparticles , PdNP/carbon dot/silicum , Real samples , Serotonin , Silica nanostructures , Simultaneous determinations
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