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Published in: Journal of Nanoparticle Research 1/2023

01-01-2023 | Research Paper

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

Authors: Joao H. A. Ferreira, Renato M. Peres, Marcelo Nakamura, Henrique E. Toma, Thiago C. Canevari

Published in: Journal of Nanoparticle Research | Issue 1/2023

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Abstract

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).

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Literature
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Metadata
Title
PdNPs/carbon dots/silica hybrid nanostructures: the development of an electrochemical sensor for simultaneous determination of dopamine and serotonin in real samples
Authors
Joao H. A. Ferreira
Renato M. Peres
Marcelo Nakamura
Henrique E. Toma
Thiago C. Canevari
Publication date
01-01-2023
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 1/2023
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-022-05659-1

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