Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7789838 | Carbohydrate Polymers | 2015 | 6 Pages |
Abstract
We report here a facile, rapid, cost-effective method via a green route for the selective detection of Hg2+ in aqueous media. In this study carboxymethylagarose (CMA) is used to generate gold nanoparticles and subsequently to act as a stabilizer for the CMA-functionalized gold nanoparticles (CMA-AuNPs). The resulting CMA-AuNPs was characterized by UV-visible, X-ray diffraction, transmission electron microscopy (TEM), dynamic light scattering (DLS), atomic force microscopy (AFM) and zeta potential measurements. Zeta potential value (â¼ â73Â mv) of CMA-AuNPs in the aqueous medium shows its higher stability. When CMA-AuNPs were exposed to an aqueous Hg2+, a blue shift for its localized surface plasmon resonance absorbance (LSPR) band is observed along with significant colour change of the solution. The probe enables to detect Hg2+ in the range of 0.01-100Â ppm even in spiked lake water samples. This study offers a sustainable and eco-friendly route for selective detection of Hg2+ in aqueous solution and may find potential application towards water purification.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Jai Prakash Chaudhary, Anshu Kumar, Parimal Paul, Ramavatar Meena,