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Energy-level structure of nitrogen-doped graphene quantum dots
- Source :
- Journal of Materials Chemistry C. 1:4908
- Publication Year :
- 2013
- Publisher :
- Royal Society of Chemistry (RSC), 2013.
-
Abstract
- The doping of carbon-based materials is of great importance due to its ability to modulate their optical, electrical and optoelectronic properties. Nitrogen-doped graphene quantum dots (N-GQDs) have received significant attention due to their superior electrocatalytic activity, optical properties and biocompatibility. The energy-level structure of N-GQDs remains unknown, which hinders the development of N-GQDs for various applications. Here, we report a one-pot synthesis method to prepare large-quantity N-GQDs at room temperature and atmospheric pressure under a prolonged reaction time. Using this approach, we can effectively dope N into the N-GQDs. As revealed by electron energy loss spectroscopy, N-doping introduces a new energy level into the electronic structure, which is responsible for tuning the optical properties of the N-GQDs.
Details
- ISSN :
- 20507534 and 20507526
- Volume :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Chemistry C
- Accession number :
- edsair.doi.dedup.....18765340991c71eee8943801f2dfda83