NDLI: TiO<sub>2</sub>-MXene/PEDOT:PSS Composite as a Novel Electrochemical Sensing Platform for Sensitive Detection of Baicalein.

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TiO₂-MXene/PEDOT:PSS Composite as a Novel Electrochemical Sensing Platform for Sensitive Detection of Baicalein.

Content Provider	Europe PMC
Author	Xue, Shuya Shi, Min Wang, Jinye Li, Jiapeng Peng, Guanwei Xu, Jingkun Gao, Yansha Duan, Xuemin Lu, Limin
Editor	Verpoort, Francis
Copyright Year	2023
Abstract	In this work, TiO₂-MXene/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) composite was utilized as an electrode material for the sensitive electrochemical detection of baicalein. The in-situ growth of TiO₂ nanoparticles on the surface of MXene nanosheets can effectively prevent their aggregation, thus presenting a significantly large specific surface area and abundant active sites. However, the partial oxidation of MXene after calcination could reduce its conductivity. To address this issue, herein, PEDOT:PSS films were introduced to disperse the TiO₂-MXene materials. The uniform and dense films of PEDOT:PSS not only improved the conductivity and dispersion of TiO₂-MXene but also enhanced its stability and electrocatalytic activity. With the advantages of a composite material, TiO₂-MXene/PEDOT:PSS as an electrode material demonstrated excellent electrochemical sensing ability for baicalein determination, with a wide linear response ranging from 0.007 to 10.0 μM and a lower limit of detection of 2.33 nM. Furthermore, the prepared sensor displayed good repeatability, reproducibility, stability and selectivity, and presented satisfactory results for the determination of baicalein in human urine sample analysis.
Journal	Molecules
Volume Number	28
DOI	10.3390/molecules28073262
PubMed Central reference number	PMC10096780
Issue Number	7
PubMed reference number	37050025
e-ISSN	14203049
Language	English
Publisher	Molecular Diversity Preservation International (MDPI)
Publisher Date	2023-04-06
Access Restriction	Open
Subject Keyword	TiO2-MXene oxygen vacancy PEDOT:PSS baicalein electrochemical sensor
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Medicine Chemistry Drug Discovery Pharmaceutical Science Analytical Chemistry Molecular Medicine Organic Chemistry

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TiO2-MXene/PEDOT:PSS Composite as a Novel Electrochemical Sensing Platform for Sensitive Detection of Baicalein.

TiO₂-MXene/PEDOT:PSS Composite as a Novel Electrochemical Sensing Platform for Sensitive Detection of Baicalein.