Colorimetric detection of trace copper ions based on catalytic leaching of silver-coated gold nanoparticles
ACS Applied Materials and Interfaces, ISSN: 1944-8244, Vol: 3, Issue: 11, Page: 4215-4220
2011
- 161Citations
- 81Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations161
- Citation Indexes161
- 161
- CrossRef146
- Captures81
- Readers81
- 81
Article Description
A colorimetric, label-free, and nonaggregation-based silver coated gold nanoparticles (Ag/Au NPs) probe has been developed for detection of trace Cu in aqueous solution, based on the fact that Cu can accelerate the leaching rate of Ag/Au NPs by thiosulfate (SO ). The leaching of Ag/Au NPs would lead to dramatic decrease in the surface plasmon resonance (SPR) absorption as the size of Ag/Au NPs decreased. This colorimetric strategy based on size-dependence of nanoparticles during their leaching process provided a highly sensitive (1.0 nM) and selective detection toward Cu, with a wide linear detection range (5-800 nM) over nearly 3 orders of magnitude. The cost-effective probe allows rapid and sensitive detection of trace Cu ions in water samples, indicating its potential applicability for the determination of copper in real samples. © 2011 American Chemical Society.
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