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Sacrificial template synthesis of ultrathin polyaniline nanosheets and their application in highly sensitive electrochemical dopamine detection
- Source :
- Materials Today Chemistry. 20:100479
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Unique functional nanomaterials as electroactive media for efficiently electrochemical biosensing have always been an ever-increasing topic in biotechnology and environmental fields. In this study, we report a simple sacrificial template-guided polymerization strategy to fabricate ultrathin two-dimensional (2D) polyaniline (PANI) nanosheets for electrochemical detection of dopamine (DA). By using vanadium pentoxide nanosheets as both sacrificial templates and oxidants, the resulting PANI nanosheets show an ultrathin thickness of ca. 4 nm with a favorable electrical conductivity of ca. 10 S cm−1. Furthermore, PANI nanosheets have been modified on a glass carbon electrode for highly sensitive DA detection. The proposed DA sensor delivers a linear range of 0.5–300 μM with a low detection limit of 0.118 μM (S/N = 3). In addition, the as-fabricated electrochemical sensor exhibits an outstanding selectivity, stability, reproducibility, and repeatability, enabling its feasible application for DA detection in real samples. Therefore, the ultrathin PANI nanosheets reported here are good candidates as electrodes for the sensitive and selective DA detection.
- Subjects :
- Detection limit
Materials science
Polymers and Plastics
Nanotechnology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Catalysis
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Nanomaterials
Electrochemical gas sensor
Biomaterials
chemistry.chemical_compound
Colloid and Surface Chemistry
chemistry
Polymerization
Polyaniline
Electrode
Materials Chemistry
Pentoxide
0210 nano-technology
Subjects
Details
- ISSN :
- 24685194
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Materials Today Chemistry
- Accession number :
- edsair.doi...........b5dd7b4090fb6fb6754ff2cf97bca39f
- Full Text :
- https://doi.org/10.1016/j.mtchem.2021.100479