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Enhanced TA determination on 3D flower-like ZnO-Pt nanocomposites under ultraviolet light illumination
- Source :
- Sensors and Actuators B: Chemical. 252:717-724
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Flower-like ZnO-Pt materials with three-dimensional architectures were synthesized by one-pot method, and a novel tannic acid (TA) analytical method based on flower-like ZnO-Pt modified glassy carbon electrode (ZnO-Pt/GCE) was also developed. Due to the introduction of metal Pt on ZnO, the as-prepared electrode exhibited good conductivity and gave rise to a significant increase in the photocurrent density under UV light illumination, confirming an enhanced charge transfer speed and a well combination between exited electron-hole pairs of ZnO. For the analysis of TA, differential pulse voltammetry (DPV) was applied to evaluate the photoelectrochemical performance on ZnO-Pt/GCE, and a wide linear range of 0.04–72.34 μM with a low detection limit of 0.02 μM (at S/N = 3) was obtained ultimately. The oxidation mechanism of tannic acid in different routes was also proposed and discussed. Moreover, the prepared electrode displayed high stability and selectivity toward the determination of tannic acid. These excellent results presented here make the ultraviolet assisted electrochemical determination a promising method in sensing.
- Subjects :
- Detection limit
Photocurrent
Materials science
Nanocomposite
Metals and Alloys
Analytical chemistry
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electrochemistry
01 natural sciences
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
chemistry
Tannic acid
Electrode
Materials Chemistry
Ultraviolet light
Differential pulse voltammetry
Electrical and Electronic Engineering
0210 nano-technology
Instrumentation
Subjects
Details
- ISSN :
- 09254005
- Volume :
- 252
- Database :
- OpenAIRE
- Journal :
- Sensors and Actuators B: Chemical
- Accession number :
- edsair.doi...........4f986140bfe9fa13f7cfe99038658057