Preparation of graphene quantum dots based core-satellite hybrid spheres and their use as the ratiometric fluorescence probe for visual determination of mercury(II) ions.

@article{Hua2015PreparationOG,
  title={Preparation of graphene quantum dots based core-satellite hybrid spheres and their use as the ratiometric fluorescence probe for visual determination of mercury(II) ions.},
  author={Mengjuan Hua and Chengquan Wang and Jing Qian and Kan Wang and Zhenting Yang and Qian Liu and Hanping Mao and Kun Wang},
  journal={Analytica chimica acta},
  year={2015},
  volume={888},
  pages={173-81}
}
We herein proposed a simple and effective strategy for preparing graphene quantum dots (GQDs)-based core-satellite hybrid spheres and further explored the feasibility of using such spheres as the ratiometric fluorescence probe for the visual determination of Hg(2+). The red-emitting CdTe QDs were firstly entrapped in the silica nanosphere to reduce their toxicity and improve their photo and chemical stabilities, thus providing a built-in correction for environmental effects, while the GQDs… CONTINUE READING