In Situ Growth of Surfactant-Free Gold Nanoparticles on Nitrogen-Doped Graphene Quantum Dots for Electrochemical Detection of Hydrogen Peroxide in Biological Environments
Chinese Academy of Sciences · Changchun Institute of Applied Chemistry
Abstract
In this work, we report a green and simple strategy for the in situ growth of surfactant-free Au nanoparticles (Au NPs) on nitrogen-doped graphene quantum dots (Au NPs-N-GQDs). The formation of hybrid was achieved by just mixing the N-GQDs and HAuCl4·4H2O without addition of any other reductant and surfactant. High-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) characterizations clearly showed the formation of Au nanoparticles with predominantly exposed (111) facets which can provide more adsorption sites. Such nonsurfactant-capped Au NPs can provide naked catalytic surface with highly electrocatalytic activity. The Au NPs-N-GQDs exhibit…
Citation impact
- FWCI
- 38.71
- Percentile
- 100%
- References
- 53
Authors
2Topics & keywords
- Chemistry
- Hydrogen peroxide
- Colloidal gold
- Graphene
- Quantum dot
- In situ
- Pulmonary surfactant
- Nanoparticle