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

Author:

Bressi Viviana12,Chiarotto Isabella3ORCID,Ferlazzo Angelo1,Celesti Consuelo14,Michenzi Cinzia3,Len Thomas2,Iannazzo Daniela1,Neri Giovanni1,Espro Claudia1

Affiliation:

1. Department of Engineering University of Messina Contrada di Dio–Vill. S. Agata I-98166 Messina Italy

2. Department of Organic Chemistry University of Córdoba Campus de Rabanales, Marie Curie (C-3), Ctra Nnal IV−A Km 396 Cordoba Spain

3. Department of Basic and Applied Sciences for Engineering (SBAI) Sapienza University of Rome Via Castro Laurenziano, 7 00161 Rome Italy

4. Department of Clinical and Experimental Medicine University of Messina Via Consolare Valeria 98125 Messina Italy

Abstract

AbstractCarbon 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 μA μM−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.

Funder

Sapienza Università di Roma

Publisher

Wiley

Subject

Electrochemistry,Catalysis

Reference45 articles.

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