Journal
NEW JOURNAL OF CHEMISTRY
Volume 42, Issue 18, Pages 14751-14756Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nj01805g
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Funding
- Fundamental Research Funds of Research Institute of Forest New Technology, CAF [CAFYBB2017SY033]
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N, Fe co-doped graphene quantum dots (N, Fe-GQDs) with excellent fluorescence performance were prepared by a simple one-pot hydrothermal method. During this process a dual doping strategy with chelated metal ions in combination with nitrogen passivation was developed. With this strategy, introducing Fe and retaining more oxygen-containing groups by chelation, in conjunction with N passivation, led to a dramatic enhancement of photoluminescence for N, Fe-GQDs. Furthermore, a fluorometric and colorimetric dual mode nanosensor based on the N, Fe-GQDs was prepared for effective and selective detecting of Fe3+ ions. More significantly, it was found that the as-prepared N, Fe-GQDs can be applied to detection of Fe3+ ions in biological samples and cellular imaging, which has a huge potential for utilization in practical applications.
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