Back to Search
Start Over
Development of Pd/Polyoxometalate/nitrogen-doping hollow carbon spheres tricomponent nanohybrids: A selective electrochemical sensor for acetaminophen.
- Source :
-
Analytica Chimica Acta . Jan2019, Vol. 1047, p28-35. 8p. - Publication Year :
- 2019
-
Abstract
- Abstract The preparation of palladium nanoparticles (Pd NPs) attached on nitrogen-doping hollow carbon spheres (NHCSs) surface using polyoxometalates (POMs) as both the reductant and bridging molecules by a green strategy was described in this paper. The samples have been thoroughly comprehensive characterized using scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, energy-dispersive X-ray spectra, and X-ray photoelectron spectroscopy. The as-prepared Pd/POMs/NHCSs tri-component nanohybrids provide enhanced electro-catalytic activities for oxidation of acetaminophen (AP) with the catalytic rate constant (k cat) of 2.34 × 103 M−1s−1 and diffusion coefficient (D) of 6.18 × 10−5 cm2s−1, because of the synergetic effects of Pd NPs and NHCSs. We assessed the use of Pd/POMs/NHCSs as an effective sensing template for electrochemical detection of AP, which showed high analytical performance, such as a linear range of 0.02 μM–0.63 μM with a sensitivity of 508.46 μAmM−1; a linear range of 0.63 μM to 0.083 mM with a sensitivity of 154.27 μAmM−1, and a low limit of detection of 3 nM. This strategy provides a new direction opportunity to promote the electrochemical performance of AP. Graphical abstract The preparation of palladium nanoparticles (Pd NPs) attached on nitrogen-doping hollow carbon spheres (NHCSs) surface using polyoxometalates (POMs) as both the reductant and bridging molecules by a facile strategy. Image 1 Highlights • Decoration of NHCSs with Pd NPs using POMs by a simple and green method. • Pd/POMs/NHCSs was developed as an effective sensing platform for the detection of AP. • The novel Pd/POMs/NHCSs hybrids will hold promise in development of electrode materials. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PALLADIUM
*NANOPARTICLES
*CARBON
*ELECTRON microscopy
*FRACTOGRAPHY
Subjects
Details
- Language :
- English
- ISSN :
- 00032670
- Volume :
- 1047
- Database :
- Academic Search Index
- Journal :
- Analytica Chimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 133599064
- Full Text :
- https://doi.org/10.1016/j.aca.2018.09.042