| Autor: |
Zhong, Yaping, He, Yu, Ge, Yili, Song, Gongwu |
| Zdroj: |
Luminescence: Journal of Biological & Chemical Luminescence; Jun2017, Vol. 32 Issue 4, p596-601, 6p |
| Abstrakt: |
This paper proposed a simple and sensitive approach for detecting graphene oxide (GO) in a wide pH range in environmental water samples using fluorescent β-CD protected Cu NCs based on the hydrogen-bond interactions between GO and 6-SH-β-CD. The influences of dilution ratio and pH were investigated. We found that the fluorescence quenching efficiency of Cu NCs by GO remained almost the same under pH from 4 to 10, which benefitted the monitoring of GO under different pH conditions in real samples. The fluorescence quenching mechanism was also discussed. The fluorescence of β-CD protected Cu NCs could be quenched in the presence of GO with a lowest detection concentration of 0.1 mg·L−1. Good linear correlations were obtained over the concentration range from 0 to 30 mg·L−1 at different pH values (pH = 4, pH = 7 and pH = 12). In addition, this method was successfully applied to the determination of GO in real samples which presents more opportunities for application in environmental and material sciences. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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