Abstract

AbstractIn this work, exfoliated WS2 nanosheets were synthesized using a two‐electrode‐configured electrochemical exfoliation method and they were used as a potential material for the detection of NADH. Using screen‐printed carbon electrodes (SPCEs) as a sensing platform, exfoliated WS2 nanostructures (ex‐WS2) were drop‐casted and their electrocatalytic activity was studied in the presence of NADH. The electrochemical impedance spectroscopy (EIS) was applied as a sensing tool to achieve superior sensing performance towards NADH. At the optimized DC bias value of 0.4 V, the developed NADH sensor shows linear calibration plots in the ranges of 2 to 2048 μM. From the calibration data, the sensitivity value was found to be 36.875 Ω log([NADH])−1 with the limit of detection (LOD) value of 57 nM. In addition to that, it also exhibited very high selectivity in the presence of other possible interfering species, suggesting that the present exfoliated WS2‐modified SPCE‐based sensing platform could be used for the impedimetric label‐free monitoring of NADH in various fields.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.