Publication Type : Journal Article
Publisher : IEEE
Source : IEEE Sensors Journal
Url : https://ieeexplore.ieee.org/document/10255630
Campus : Bengaluru
School : School of Engineering
Year : 2023
Abstract : A electrochemical biosensor based on a 2-D tungsten diselenide (WSe2) nanoflakes electrode was developed for highly selective detection of dopamine (DA). The DA sensors were fabricated by modifying carbon cloth (CC) with optimized loading of tungsten WSe2 nanoflakes. The material properties and sensor characterization were investigated by scanning electron microscopic, X-ray diffraction, X-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Mott–Schottky analysis. The sensor exhibited a large active working area with an average sensitivityof 1.6325μA⋅μM−1⋅cm2 and a normalized sensitivity of 0.16μM−1 with a limit of detection (LoD) of 4 nM. The sensors were highly selective with respect to sucrose, L-cysteine, uric acid (UA), glucose, ascorbic acid (AA), and fructose.
Cite this Research Publication : K Ramya, Aditya Tiwari, PN Sidhartha, Sayan Kanungo, and Karumbaiah N Chappanda. 2D tungsten di-selenide nano-flakes for selective dopamine sensing. IEEE Sensors Journal 23,2023, 25680. [SCI, Impact Factor: 4.30]