Gold nanoclusters supported Molybdenum diselenide-porous carbon composite as an efficient electrocatalyst for selective ultrafast probing of chlorpyrifos-pesticide

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2023-09, Vol.472, p.145048, Article 145048
• Main Authors: Ezhil Vilian, A.T., Mohammadi, Ali, Han, Soobin, Tiwari, Jitendra N., Kumar, Krishan, Senthil Kumar, Annamalai, Saravanan, Adhimoorthy, Huh, Yun Suk, Han, Young-Kyu
• Format: Article
• Language: English
• Subjects: Amperometry; Chlorpyrifos; Electrochemical sensor; Gold nanocluster; Molybdenum diselenide; Porous carbons
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2023.145048

[Display omitted] •Au CNs decorated on MoSe2-PC were fabricated via a simple route.•The sensor showed long-term stability (˃30 days) and reusability (after 10 times).•AuCN-MoSe2-PC-GCE has an ultra-low detection limit for directCPS sensing.•The fabricated sensor was used for on-site sensing of CPS from real samples. Chlorpyrifos (CPS) is an organophosphorus pesticide widely utilized in agricultural production. Much like other commonly used highly toxic and hazardous substances, is harmful to humans, plants, and animals. Thus, the development of highly efficient electrocatalysts that can monitor and detect levels of CPS in environmental samples is urgently required. This research describes a simple means of synthesizing Au nanoclusters (AuNCs) incorporated into MoSe2-Porous carbons (PCs) via a single-step hydrothermal reaction followed by chemical reduction. AuNC-MoSe2-PC coated Glassy carbon electrodes (GCEs) exhibited excellent electrocatalytic activity, interfacial charge transfer ability (96 Ω), and cathodic peak intensities at a low reduction wave potential (∼ −0.74 V) for sensing CPS. The developed sensor exhibited a wide linear range from 5 to 185 nM, a rapid amperometric response of