서브비주얼

HOME > Publication > Paper

Paper

2021 | "Electrochemically Exfoliated WS2 Nanosheets for the Electrochemical I…

페이지 정보

작성자 관리자 /   작성일2022-04-13 /   조회122회

첨부파일

본문

-Title : Electrochemically Exfoliated WS2 Nanosheets for the Electrochemical Impedimetric Detection of NADH
- Authors : Dulyawat Doonyapisut, Padmanathan Karthick Kannan, Byeongkyu Kim, Chan‐Hwa Chung
 
- Journal: ChemElectroChem (2021)
 -Vol./No./Page: 8/23/4597-4604
 -DOI : 10.1002/celc.202101343

Abstract
In 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.

Paper 목록