Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 931, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.167474
Keywords
Copper -palladium; Tectona grandis; Dimetridazole; Anti -protozoal; Drug analysis
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In this study, the potential of biomass waste material, specifically teak leaves, as a carbon precursor in the development of sustainable electrochemical (EC) sensors was investigated. Copper-palladium alloy nanoparticles were successfully immobilized on teak leaves carbon through a microwave-carbonization process. The resulting nanocomposite exhibited excellent electrochemical performance and was used for the detection of dimetridazole.
In this work, we study the prospect of using biomass waste material, such as teak (Tectona grandis) leaves, as a carbon precursor in the development of new carbon material for the sustainable electrochemical (EC) sensor application. We successfully immobilized copper-palladium alloy nanoparticles decorated on a teak leaves carbon (Cu-Pd@TLC) nanocomposite via a simple microwave-carbonization process. A variety of physicochemical and EC methods were employed to characterize the morphology, structural, and EC properties of the nanocomposite. A screen-printed electrode modified with the composite (Cu-Pd@TLC/ SPCE) was tested for EC sensing of dimetridazole (DMT, an anti-fungal/protozoal drug). The voltammetric signal increases linearly in the in the range of 0.15-119.4 mu M; 144.4-746.9 mu M, limit of detection (LOD) of 0.015 mu M, and analytical sensitivity of 0.79 mu A mu M-1 cm-2, respectively. The sensor was successfully applied to the determination of DMT even in the presence of human real samples, including urine and serum with satisfactory recovery results. Moreover, the Cu-Pd@TLC nanocomposite exhibited an extraordinary perfor-mance for catalytic reduction of DMT with a pseudo-first order rate constant (k) of ca. 1412 s-1, as verified by UV-vis spectroscopy. The proposed nanocomposite is a suitable platform for prospective electro-catalytic and catalytic applications.(c) 2022 Elsevier B.V. All rights reserved.
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