Cinti, S.S.CintiColozza, N.N.ColozzaCacciotti, I.I.CacciottiMoscone, D.D.MosconePolomoshnov, M.M.PolomoshnovSowade, E.E.SowadeBaumann, R.R.R.R.BaumannArduini, F.F.Arduini2022-03-052022-03-052018https://publica.fraunhofer.de/handle/publica/25608710.1016/j.snb.2018.03.0062-s2.0-85044006195Herein 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.en541journal article