Carbon dots (CDs) samples were synthesized from orange peel waste (OPW) via a simple and eco-friendly hydrothermal carbonization (HTC) and electrochemical (EC) bottom-up synthesis integrated approach. The comprehensive chemical-physical characterization of CDs samples, carried out by various techniques such as TEM, EDX, XRD, FT-IR, underlined their morphological and microstructural features. The CDs exhibited attractive electrochemical properties, and thus an electrochemical sensor by modifying a screen printed carbon electrode (CDs/SPCE) for the detection of nitrobenzene (NB) in water was developed. Electroanalytical performances of CDs/SPCE sensor using differential pulse voltammetry (DPV) demonstrated its high sensitivity (9.36 μAμM^(-1)cm(^-2)) towards NB in a wide linear dynamic range (0.1–2000 μM) and a low limit of detection (LOD=13 nM). The electrochemical sensor also shown high selectivity, long-term stability, and repeatability. This paper might open the way to a new synergistic HTC-EC approach for the synthesis of CDs from waste biomass material and their advanced application in highly efficient electrochemical sensors.

Voltammetric Sensor Based on Waste-Derived Carbon Nanodots for Enhanced Detection of Nitrobenzene / Bressi, Viviana; Chiarotto, Isabella; Ferlazzo, Angelo; Celesti, Consuelo; Michenzi, Cinzia; Len, Thomas; Iannazzo, Daniela; Neri, Giovanni; Espro, Claudia. - In: CHEMELECTROCHEM. - ISSN 2196-0216. - 2023:(2023), pp. 1-9. [10.1002/celc.202300004]

Voltammetric Sensor Based on Waste-Derived Carbon Nanodots for Enhanced Detection of Nitrobenzene

Isabella Chiarotto
Secondo
Writing – Original Draft Preparation
;
Cinzia Michenzi
Investigation
;
2023

Abstract

Carbon dots (CDs) samples were synthesized from orange peel waste (OPW) via a simple and eco-friendly hydrothermal carbonization (HTC) and electrochemical (EC) bottom-up synthesis integrated approach. The comprehensive chemical-physical characterization of CDs samples, carried out by various techniques such as TEM, EDX, XRD, FT-IR, underlined their morphological and microstructural features. The CDs exhibited attractive electrochemical properties, and thus an electrochemical sensor by modifying a screen printed carbon electrode (CDs/SPCE) for the detection of nitrobenzene (NB) in water was developed. Electroanalytical performances of CDs/SPCE sensor using differential pulse voltammetry (DPV) demonstrated its high sensitivity (9.36 μAμM^(-1)cm(^-2)) towards NB in a wide linear dynamic range (0.1–2000 μM) and a low limit of detection (LOD=13 nM). The electrochemical sensor also shown high selectivity, long-term stability, and repeatability. This paper might open the way to a new synergistic HTC-EC approach for the synthesis of CDs from waste biomass material and their advanced application in highly efficient electrochemical sensors.
2023
carbon nanodots; electrochemical sensor; electrochemical bottom-up synthesis; waste valorization; nitrobenzene
01 Pubblicazione su rivista::01a Articolo in rivista
Voltammetric Sensor Based on Waste-Derived Carbon Nanodots for Enhanced Detection of Nitrobenzene / Bressi, Viviana; Chiarotto, Isabella; Ferlazzo, Angelo; Celesti, Consuelo; Michenzi, Cinzia; Len, Thomas; Iannazzo, Daniela; Neri, Giovanni; Espro, Claudia. - In: CHEMELECTROCHEM. - ISSN 2196-0216. - 2023:(2023), pp. 1-9. [10.1002/celc.202300004]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1681436
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