Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 218, Issue -, Pages 67-72Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.04.081
Keywords
Visual colorimetric sensing; o-Phosphorylethanolamine; Gold nanoparticles; Uranium
Funding
- National Natural Science Foundation of China [21301028, 21201033, 11475044, 41461070]
- National Basic Research Program of China [2014CB460604]
- Natural Science Foundation of Jiangxi Province [20132BAB203027]
- Project of the Jiangxi Provincial Department of Education [GJJ13452, GJJ14472]
- Jiangxi province science and technology support program [20141BBG70001]
- Jiangxi province science and technology innovation team program [20142BCB24006]
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A simple and selective colorimetric sensor based on o-phosphorylethanolamine-functionalized gold nanoparticles (OPA-Au NPs) as an optical probe has been developed for the detection of UO22+. OPA-Au NPs rapidly aggregate in the presence of UO22+, thereby causing a visual color change from red to blue, which is easily detectable by eye. The proposed sensing system possesses a selective response for UO22+ over other heavy metal ions. The current method shows application potential for UO22+ detection in real water samples. (C) 2015 Elsevier B.V. All rights reserved.
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