Abstract
The widespread use of Strychnine (STN) pesticides has sparked considerable concerns regarding their impact on human health, underscoring the urgent need for a reliable STN detection system to ensure both environmental and human safety. To address this need, a simple hydrothermal technique was employed to synthesize three-dimensional flower-like Strontium doped Zinc oxide (Sr-ZnO) nanomaterials integrated with Carbon Black (CB) to form a composite, which was then utilized for selective STN detection. The prepared Sr-ZnO/CB nanocomposite has been utilized to decorate a glassy carbon electrode (GCE), providing a cost-effective and simplified platform for STN detection. Hence, the structural confirmation of the composite formation was achieved through appropriate microscopic and spectroscopic methods. In terms of electrochemical STN detection, the Sr-ZnO/CB/GCE exhibited superior sensitivity compared to previous sensors. Notably, it demonstrated a broad linearity response range from 0.01 to 145 μM, a low detection limit of 0.02 μM, and a high sensitivity of 5.541 μA μM−1 cm−2 under optimal conditions for STN detection. Hence, the proposed approach showed promise for analyzing STN in biological samples, with satisfactory results obtained when applied to real samples using the Sr-ZnO/CB. Additionally, the Sr-ZnO/CB modified electrode displayed appealing qualities such as stability, repeatability, and suitability for practical applications.
Published Version
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