Highly Selective Colorimetric Detection of Copper Ions Using Cysteamine Functionalized Gold Nanoparticles

In this study, we designed a system of integrating gold nanoparticles and cysteamine to detect Cu2+ based on a colorimetric strategy. The quantified limit of detection towards Cu2+ is 0.4 µM, which is ∼50 times lower than the maximum contamination level (∼20 µM) in drinking water permitted by US env...

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Bibliographic Details
Published in:Journal of the Chinese Chemical Society (Taipei) 2014-12, Vol.61 (12), p.1371-1376
Main Authors: Li, Le, Yuan, Zhiqin, Peng, Xinkai, Li, Lin, He, Jiantai, Zhang, Yangde
Format: Article
Language:English
Subjects:
Colorimetric
Copper ions
Cysteamine
Gold nanoparticles
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Summary:In this study, we designed a system of integrating gold nanoparticles and cysteamine to detect Cu2+ based on a colorimetric strategy. The quantified limit of detection towards Cu2+ is 0.4 µM, which is ∼50 times lower than the maximum contamination level (∼20 µM) in drinking water permitted by US environmental protection agency. The practicality of this system was further validated by detecting Cu2+ in different water samples. A highly selective colorimetric Cu2+ detection system was developed by integrating gold nanoparticles and cysteamine. Due to the interaction between amine group in cysteamine and Cu2+, as prepared cysteamine functionalized gold nanoparticles display selective response toward Cu2+ over other metal ions at pH 8 and provide rapid and reliable nanoprobes for Cu2+ detection in aqueous media.
ISSN:0009-4536
2192-6549
DOI:10.1002/jccs.201400188