journal article·2015-03-11

Direct Visualization of Lead Corona and Its Nanomolar Colorimetric Detection Using Anisotropic Gold Nanoparticles

Charu Dwivedi, Abhishek Chaudhary, Abhishek Gupta, Chayan K. Nandi

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Abstract

The study presents dithiothreitol (DTT) functionalized anisotropic gold nanoparticles (GNP) based colorimetric sensor for detection of toxic lead ions in water. Our results demonstrate the selectivity and sensitivity of the developed sensor over various heavy metal ions with detection limit of ∼9 nM. The mechanism of sensing is explained on the basis of unique corona formation around the DTT functionalized anisotropic GNP.
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Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Advanced biosensing and bioanalysis techniques · Electrochemical Analysis and Applications

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Affiliations

School of Basic Sciences, Indian Institute of Technology Mandi, Mandi-175001, India

Funding

Indian Institute of Technology Mandi · Department of Science and Technology, Ministry of Science and Technology

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