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- W3159907821 abstract "At present, a voltammetric L-Cystein (Cys) sensor is developed based on carbon nanotube (MWCNT) supported Ru, Pd, and Pt monometallic catalyst modified glassy carbon electrodes (GCE). Ru/MWCNT, Pd/MWCNT, and Pt/MWCNT catalysts are prepared via sodium borohydride reduction method and characterized with advanced surface analytical techniques as inductively coupled plasma mass spectrometry (ICP-MS), N2 adsorption-desorption, X-ray diffraction (XRD), and transission electron microscopy (TEM). Characterization results reveal that these catalysts are succesfully sythesized at desired metal loadings. For electrochemical studies, GCE is modified with Ru/MWCNT, Pd/MWCNT, and Pt/MWCNT catalysts to obtain a disposable, inexpensive, and sensitive sensor for Cys. The electrochemical behavior of the modified GCE is investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Ru/MWCNT modified GCE electrode exhibits best Cys electro-oxidation activity and thus, further electrochemical studies as sensitivity and limit of detection determination, intereference study, and real sample analysis are performed on Ru/MWCNT modified GCE electrode. The Cys sensor has a linear response within the range of 0–200 μM with current sensitivity 0.3058 μA/μM (4307.05 μA/mMcm2), and 0.353 lowest detection limit at (S/N = 3) signal to noise ratio. Interference studies reveal that Ru/MWCNT modified GCE electrode is not affected by d-glucose, uric acid, l-Tyrosine, l-Trytophane, H2O2, homocysteine, and glutathione as common interfering species. The developed sensor based on Ru/MWCNT modified GCE electrode is also employed to quantify Cys in acetylcysteine drug sample. This novel study reports a strategy to sense Cys on Ru/MWCNT modified GCE electrode." @default.
- W3159907821 created "2021-05-10" @default.
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- W3159907821 date "2021-07-01" @default.
- W3159907821 modified "2023-10-15" @default.
- W3159907821 title "Nanostructured electrochemical cysteine sensor based on carbon nanotube supported Ru, Pd, and Pt catalysts" @default.
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- W3159907821 doi "https://doi.org/10.1016/j.matchemphys.2021.124689" @default.
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