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Electroanalysis moves towards paper-based printed electronics: carbon black nanomodified inkjet-printed sensor for ascorbic acid detection as a case study
- Publication Year :
- 2018
-
Abstract
- Herein we demonstrated, for the first time, the possibility to use the paper employed in printed electronics (i.e. p_e:smart) as substrate to develop a paper-based sensor. To improve the electrochemical performances of the inkjet-printed sensor, a dispersion based on carbon black nanoparticles was used to modify the working electrode, allowing for a highly performant nanomodified electrochemical sensor platform. This disposable sensor was characterized both electrochemically and morphologically, and it has been successively challenged towards a model analyte namely ascorbic acid. It has been evidenced that the presence of carbon black as nanomodifier decreased the overpotential for ascorbic acid oxidation (from 0.47 V to 0.28 V) with respect to the unmodified sensor and boosted the sensitivity (ca. 3-times). The applicability of this printed electrochemical sensor was demonstrated for the detection of ascorbic acid in a dietary supplement, quantifying 999 ± 130 mg with respect to the 1000 mg reported on the label.
- Subjects :
- Analyte
Materials science
Working electrode
Nanotechnology
02 engineering and technology
Substrate (printing)
Overpotential
01 natural sciences
Paper-based sensor
Electroanalysi
Carbon black
Materials Chemistry
Ascorbic acidCarbon blackElectroanalysisInkjet printingPaper-based sensorsPrinted electronics
Settore CHIM/01 - Chimica Analitica
Electrical and Electronic Engineering
Instrumentation
010401 analytical chemistry
Metals and Alloys
Printed electronics
021001 nanoscience & nanotechnology
Condensed Matter Physics
Ascorbic acid
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Electrochemical gas sensor
Inkjet printing
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....806ae3a7e359709aa30b42feaf958dcc