| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7147704 | Sensors and Actuators B: Chemical | 2014 | 6 Pages |
Abstract
A convenient colorimetric sensor based on anti-aggregation of citrate-capped gold nanoparticles (AuNPs) is demonstrated for thiocyanate (SCNâ) sensing. The citrate-capped AuNPs aggregated readily in the presence of sulfuric acid, leading to a color change from red to blue. This particle aggregation could be suppressed by SCNâ, which had strong protective effect on the gold colloid. The thiocyanate recognition suffers insignificant interference from most of common ions. With this strategy, 1 μM of SCNâ can be recognized within 5 min by naked-eye observation. This simple, selective, and sensitive approach can be potentially applied for SCNâ assays in environmental aqueous samples.
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Physical Sciences and Engineering
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Authors
Hao-Hua Deng, Chun-Lin Wu, Ai-Lin Liu, Guang-Wen Li, Wei Chen, Xin-Hua Lin,