Fabrication of a Ti3C2Tx modified glassy carbon electrode for the sensitive electrochemical detection of quercetin. (25th October 2021)

• Record Type: Journal Article
• Authors: Sun, Yunxiu; Wang, Baoli; He, Xiaoli; Wang, Yitong; Chen, Lin; Zhu, Yuxin; Li, Guangjiu; Sun, Wei
• Is Part Of: New journal of chemistry. Volume 45:Number 43(2021)
• Page Start: 20396
• Page End: 20401
• Publication Date: 2021-10-25
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d1nj04046d
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Fabrication of MXene/GCE for the electrochemical determination of quercetin. Abstract : In this study, two-dimensional MXene Ti3 C2 T x was modified on a glassy carbon electrode (GCE) to improve its performance for electrochemical detection. The morphology and structure of Ti3 C2 T x were characterized by SEM and TEM. A new modified electrode was then fabricated by coating MXene solution on GCE for quercetin detection. The performance of MXene/GCE was determined by various methods, which showed an enhanced electrochemical activity. Direct electrochemistry of quercetin was investigated, and a pair of well-shaped redox peaks appeared with a peak-to-peak separation of 67 mV. The detection of quercetin by this proposed electrode was studied in detail, and presented a lower detection limit of 33 nM (3S0 /S) with electrochemical parameters such as the electron transfer number ( n ), electron transfer coefficient ( α ) and reaction rate constant ( k s ) calculated as 1.99, 0.65 and 0.29 s −1, respectively. MXene/GCE was successfully utilized for the analysis of quercetin content in Ginkgo tablet samples with recoveries from 100.92% to 104.66%. Besides, MXene/GCE showed good anti-interference performance, good stability and reproducibility for the detection of quercetin.