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

doi:10.1016/j.materresbull.2013.03.015

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

Chemistry

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

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 language	English (US)
Pages (from-to)	2529-2534
Number of pages	6
Journal	Materials Research Bulletin
Volume	48
Issue number	7
DOIs	https://doi.org/10.1016/j.materresbull.2013.03.015
State	Published - Jul 1 2013

All Science Journal Classification (ASJC) codes

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

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10.1016/j.materresbull.2013.03.015

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title = "Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots",

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.",

author = "Ruihua Liu and Haitao Li and Weiqian Kong and Juan Liu and Yang Liu and Cuiyan Tong and Xing Zhang and Zhenhui Kang",

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T1 - Ultra-sensitive and selective Hg2+ detection based on fluorescent carbon dots

AU - Liu, Ruihua

AU - Li, Haitao

AU - Kong, Weiqian

AU - Liu, Juan

AU - Liu, Yang

AU - Tong, Cuiyan

AU - Zhang, Xing

AU - Kang, Zhenhui

PY - 2013/7/1

Y1 - 2013/7/1

N2 - 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.

AB - 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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