Enhanced electrochemical performance of screen-printed carbon electrode by RF-plasma-assisted polypyrrole modification

Screen-printed carbon electrode (SPCE) has been extensively used in electrochemical (EC) detections due to its excellent EC characteristics and low cost. However, SPCE is not sensitive to a small amount of reagents, which severely limits its application in trace detection. Herein, an effective metho...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2022-09, Vol.33 (25), p.19923-19936
Main Authors: Wang, Jing, Xu, Shuaikang, Sun, Pengcheng, Du, Haiying, Wang, Liding
Format: Article
Language:English
Subjects:
Adenine
Carbon
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electrochemical analysis
Electrodes
Materials Science
Nicotinamide
Nicotinamide adenine dinucleotide
Optical and Electronic Materials
Oxygen content
Oxygen plasma
Photoelectrons
Polypyrroles
Potassium ferricyanide
Radio frequency plasma
Raman spectroscopy
Reagents
Sensitivity enhancement
Spectrum analysis
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Summary:Screen-printed carbon electrode (SPCE) has been extensively used in electrochemical (EC) detections due to its excellent EC characteristics and low cost. However, SPCE is not sensitive to a small amount of reagents, which severely limits its application in trace detection. Herein, an effective method, radio frequency plasma-assisted polypyrrole (PPy) modification, is proposed to improve the detection sensitivity of SPCEs. PPy nanosheets are treated with hydrogen or oxygen plasma, respectively. The improved mechanism is explored via scanning electron microscopy (SEM), X-ray photoelectron spectroscopy, Raman spectroscopy, and other characterization approaches. Detailed characterization results indicate that the significant enhancement of detection sensitivity is attributed to the increase of both the reaction area and surface oxygen content of SPCEs. To further demonstrate the effectiveness of this modification method, a series of concentrations of K 3 [Fe(CN) 6 ] and nicotinamide adenine dinucleotide were determined, respectively. The results indicate that the modified SPCEs exhibit excellent repeatability, uniformity, and long-term stability.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-022-08811-8