Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (2): 35 doi: 10.1007/s41365-016-0038-1

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Mercury (II) detection by water-soluble photoluminescent ultra-small carbon dots synthesized from cherry tomatoes

Peng Wang 1, Rui-Bo Zhong 2, Ming Yuan  2, Pei Gong  2, Xin-Min Zhao  2, Feng Zhang 2   

  1. 1 The First Affiliated Hospital of BaoTou Medical College, Baotou 014010, China
    2 Agricultural Nanocenter, School of Life Sciences, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Contact: Feng Zhang E-mail:fengzhang1978@hotmail.com
PDF ShareIt Export Citation
Peng Wang, Rui-Bo Zhong, Ming Yuan, Pei Gong, Xin-Min Zhao, Feng Zhang . Mercury (II) detection by water-soluble photoluminescent ultra-small carbon dots synthesized from cherry tomatoes.Nuclear Science and Techniques, 2016, 27(2): 35     doi: 10.1007/s41365-016-0038-1

Abstract:

Mercury ions have been considered highly toxic to human health. What would be great is to develop the ionic probes without any toxicities themselves. Here, we report a friendly, highly sensitive mercury (II) ionic probe, water-soluble photoluminescence carbon dots which were synthesized by simply hydrothermal treatment of fresh cherry tomatoes without adding any other reagents. The ultra-small (<1 nm) carbon dots show robust excitation-depended photoluminescence under a wide pH range (4–10) or a strong ionic strength of up to 1 M, and the detection limit of mercury (II) has been determined as low as 18 nM. We envision such water-soluble, biocompatible carbon dots that could be applied to biolabeling, bio-imaging, and biosensing fields.

Key words: Carbon dots, Photoluminescence, Cherry tomato, Mercury, Detection