Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 181, Issue -, Pages 114-118Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.01.058
Keywords
Colorimetric; Ferric ion; Gold nanoparticles; Leaching; Surface plasmon; Thiourea
Funding
- Top Engineering Co.
- Global Frontier Center for Advanced Soft Electronics by MEST in Korea
Ask authors/readers for more resources
We report colorimetric, label-free, and non-aggregation-based gold nanoparticle (AuNP) probes for the highly selective detection of Fe(III) ions in aqueous environments. This detection scheme relies on the ability of Fe(III) ions to catalyze the leaching of gold at room temperature in the presence of thiourea species and hydrochloric acid. The catalytic leaching of the AuNP probes results in rapid and remarkable damping of the surface Plasmon band and hence induces a visible color change which can be easily detected through naked eye. This simple and cost-effective probe provides rapid detection of Fe(III) ions at concentrations as low as 50 ppm and expected to be effective to design efficient environmental and biological sensor. (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available