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A green synthesis of highly fluorescent nitrogen-doped graphene quantum dots for the highly sensitive and selective detection of mercury(II) ions and biothiols
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yan, Zhengyu Qu, Xincheng Niu, Qianqian Tian, Chunqing Fan, Chuanjian Ye, Baofen |
| Copyright Year | 2016 |
| Abstract | A facile and environmentally friendly strategy to prepare nitrogen-doped graphene quantum dots (N-GQDs) with a high quantum yield of 28.10% was reported. The obtained N-GQDs exhibited strong blue fluorescence emission with the maximum emission and excitation at 450 nm and 355 nm, respectively. Taking advantage of the effective quenching effect of Hg2+ on N-GQDs, such N-GQDs were developed for the efficient and sensitive detection of Hg2+ with a relatively low detection limit of 0.032 μM. Based on the selective coordination of biothiols and Hg2+, the fluorescence of the N-GQD/Hg system was recovered with the addition of biothiols. This fluorescent “Off–On” process showed a sensitive response to biothiols with a detection limit of 0.036 μM for cysteine and 0.034 μM for glutathione. Most importantly, the N-GQD-based fluorescence method was successfully used to monitor Hg2+ in real water samples and biothiols in serum samples. |
| Starting Page | 1565 |
| Ending Page | 1571 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C5AY03208C |
| Volume Number | 8 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c5/ay/c5ay03208c/c5ay03208c1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C5AY03208C |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
