Full Paper

Gold-Nanocluster-Based Fluorescent Sensors for Highly Sensitive and Selective Detection of Cyanide in Water

  1. Yanlan Liu1,
  2. Kelong Ai1,
  3. Xiaoli Cheng2,
  4. Lihua Huo2,
  5. Lehui Lu1,*

Article first published online: 22 FEB 2010

DOI: 10.1002/adfm.200902062

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 20, Issue 6, pages 951–956, March 24, 2010

Additional Information

How to Cite

Liu, Y., Ai, K., Cheng, X., Huo, L. and Lu, L. (2010), Gold-Nanocluster-Based Fluorescent Sensors for Highly Sensitive and Selective Detection of Cyanide in Water. Adv. Funct. Mater., 20: 951–956. doi: 10.1002/adfm.200902062

Author Information

  1. 1

    State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (PR China)

  2. 2

    Heilongjiang University Harbin 150080 (PR China).

*State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 (PR China).

Publication History

  1. Issue published online: 22 MAR 2010
  2. Article first published online: 22 FEB 2010
  3. Manuscript Revised: 9 DEC 2009
  4. Manuscript Received: 3 NOV 2009

Funded by

  • National Basic Research Program of China (973 Program). Grant Number: 2010CB933600
  • “Hundred Talents Project” of the Chinese Academy of Sciences
  • NSFC. Grant Number: 20873138

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Keywords:

  • gold;
  • nanoclusters;
  • cyanide;
  • fluorescence;
  • sensors

Abstract

A novel, gold-nanocluster-based fluorescent sensor for cyanide in aqueous solution, which is based on the cyanide etching-induced fluorescence quenching of gold nanoclusters, is reported. In addition to offering high selectivity due to the unique Elsner reaction between cyanide and the gold atoms of gold nanoclusters, this facile, environmentally friendly and cost-effective method provides high sensitivity. With this sensor, the lowest concentration to quantify cyanide ions could be down to 200 × 10−9 M, which is approximately 14 times lower than the maximum level (2.7 × 10−6 M) of cyanide in drinking water permitted by the World Health Organization (WHO). Furthermore, several real water samples spiked with cyanide, including local groundwater, tap water, pond water, and lake water, are analyzed using the sensing system, and experimental results show that this fluorescent sensor exhibits excellent recoveries (over 93%). This gold-nanocluster-based fluorescent sensor could find applications in highly sensitive and selective detection of cyanide in food, soil, water, and biological samples.

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