Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots

Ruihua Liu, Haitao Li, Weiqian Kong, Juan Liu, Yang Liu, Cuiyan Tong, Xing Zhang, Zhenhui Kang

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Fluorescent carbon dots (FCDs) were efficiently synthesized by one-step sodium hydroxide-assisted reflux method from poly(ethylene glycol) (PEG). The obtained FCDs exhibit excellent water-solubility and high stability. Under the UV irradiation, the FCDs could emit bright blue photoluminescence, and also they were found to show excellent up-conversion fluorescence. It was further demonstrated that such FCDs can serve as effective fluorescent sensing platform for Hg2+ ions detection with ultra-sensitivity and selectivity. The sensing system achieved a limit of detection as low as 1 fM, which is much lower than all the previous reported sensing systems for Hg2+ ions detection. This FCDs sensing system has been successfully applied for the analysis of Hg2+ ions in water samples from river, lake, and tap water, showing good practical feasibility.

Original languageEnglish (US)
Pages (from-to)2529-2534
Number of pages6
JournalMaterials Research Bulletin
Volume48
Issue number7
DOIs
StatePublished - Jul 1 2013

Fingerprint

Carbon
carbon
Ions
Polyethylene glycols
Water
Sodium Hydroxide
water
Lakes
ions
sodium hydroxides
Photoluminescence
taps
Solubility
Rivers
Fluorescence
Sodium
Irradiation
lakes
rivers
glycols

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Liu, Ruihua ; Li, Haitao ; Kong, Weiqian ; Liu, Juan ; Liu, Yang ; Tong, Cuiyan ; Zhang, Xing ; Kang, Zhenhui. / Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots. In: Materials Research Bulletin. 2013 ; Vol. 48, No. 7. pp. 2529-2534.
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abstract = "Fluorescent carbon dots (FCDs) were efficiently synthesized by one-step sodium hydroxide-assisted reflux method from poly(ethylene glycol) (PEG). The obtained FCDs exhibit excellent water-solubility and high stability. Under the UV irradiation, the FCDs could emit bright blue photoluminescence, and also they were found to show excellent up-conversion fluorescence. It was further demonstrated that such FCDs can serve as effective fluorescent sensing platform for Hg2+ ions detection with ultra-sensitivity and selectivity. The sensing system achieved a limit of detection as low as 1 fM, which is much lower than all the previous reported sensing systems for Hg2+ ions detection. This FCDs sensing system has been successfully applied for the analysis of Hg2+ ions in water samples from river, lake, and tap water, showing good practical feasibility.",
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Liu, R, Li, H, Kong, W, Liu, J, Liu, Y, Tong, C, Zhang, X & Kang, Z 2013, 'Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots', Materials Research Bulletin, vol. 48, no. 7, pp. 2529-2534. https://doi.org/10.1016/j.materresbull.2013.03.015

Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots. / Liu, Ruihua; Li, Haitao; Kong, Weiqian; Liu, Juan; Liu, Yang; Tong, Cuiyan; Zhang, Xing; Kang, Zhenhui.

In: Materials Research Bulletin, Vol. 48, No. 7, 01.07.2013, p. 2529-2534.

Research output: Contribution to journalArticle

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AU - Zhang, Xing

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