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Cu-doped In <sub>2</sub> S <sub>3</sub> quantum dot-CeO <sub>2</sub> nanorod hybrid electrodes <i>via</i> 3D nanoprinting-inspired structuring for ultrasensitive heavy metal detection

Ali Kamil KareemI.B. SapaevHead of the Department Physics and Chemistry, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, Tashkent, UzbekistanFadhil Faez SeadDepartment of Chemistry, College of Chemistry, The Islamic University, Najaf, IraqPayal N. VajaSchool of Pharmacy, Dr Subhash University, Junagadh, IndiaMalatesh AkkurDepartment of Physics & Electronics, School of Sciences, JAIN (Deemed to be University), Bangalore, Karnataka, IndiaSanjeev KumarDepartment of Physics, University Institute of Sciences, Chandigarh University, Mohali, Punjab, IndiaPragyan Paramita PattnaikDepartment of Mechanical Engineering, Siksha ‘O” Anusandhan (Deemed to be University), Bhubaneswar, Odisha-751030, IndiaZainab Jamal HamoodahMazaya University College, IraqB. SaadiDepartment of Medical Laboratories Technology, Al-Nisour University College, Nisour Seq. Karkh, Baghdad, IraqSharmin SmaeilpourYoung Researchers and Elite Club, Tehran Branch, Islamic Azad University, Tehran, Iran
RSC Advancesjournal2025en
ABI

Аннотация

detection. Differential pulse voltammetry (DPV) enabled simultaneous monitoring with well-resolved anodic peaks (150-200 mV separation), broad linear range (0.1 nM to 50 µM), and low detection limits down to 32-60 nM. Electrochemical impedance spectroscopy confirmed reduced charge transfer resistance (∼150 Ω), consistent with accelerated interfacial kinetics. Importantly, the sensor showed strong resilience in ISO 15189-compliant artificial serum and synthetic urine, achieving recoveries of 95.5-99.0% with RSD < 4.5%. This work demonstrates how synergistic nanocomposite chemistry combined with advanced electrode structuring can deliver scalable and robust electrochemical platforms for real-time heavy metal detection in biomedical and environmental applications.

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Мавзулар

Electrochemical Analysis and ApplicationsElectrochemical sensors and biosensorsAdvanced biosensing and bioanalysis techniques

Идентификаторлар

DOI
10.1039/d5ra07443f

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