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Journal of Nanoparticle Research
Erschienen in: Journal of Nanoparticle Research 5/2013

01.05.2013 | Research Paper

Silver nanoparticles deposited on amine-functionalized silica spheres and their amalgamation-based spectral and colorimetric detection of Hg(II) ions

verfasst von: Perumal Rameshkumar, Shanmugam Manivannan, Ramasamy Ramaraj

Erschienen in: Journal of Nanoparticle Research | Ausgabe 5/2013

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Abstract

A facile synthetic method to decorate amine-functionalized silica spheres (SiO2) by silver nanoparticles (Ag NPs) is reported. The transmission electron microscopic (TEM) images showed that spherical Ag NPs with an average particle size of 14 nm were deposited on 250 nm-sized SiO2 spheres (SiO2/Ag NPs). The spectral and colorimetric detection of Hg(II) ions were carried out using the synthesized SiO2/Ag NPs with an experimental detection limit of 5 μM. It was found that the addition of Hg(II) ions (150 μM) into the solution of SiO2/Ag NPs completely quenched the SPR band of the Ag NPs due to the formation of anisotropic Ag amalgam crystals (AgHg). The selective detection of Hg(II) ions by SiO2/Ag NPs in the presence of other environmentally relevant metal ions was also demonstrated using spectral and colorimetric methods.

Graphical abstract

Amine-functionalized silica spheres are decorated by in situ formation of silver nanoparticles and their spectral and colorimetric detection of Hg(II) ions is reported.
Vorheriger Artikel Solubility extension and phase formation in gas-condensed Co–W nanoclusters
Nächster Artikel Nanofibrous TiO2 improving performance of mesoporous TiO2 electrode in dye-sensitized solar cell

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Metadaten
Titel
Silver nanoparticles deposited on amine-functionalized silica spheres and their amalgamation-based spectral and colorimetric detection of Hg(II) ions
verfasst von
Perumal Rameshkumar
Shanmugam Manivannan
Ramasamy Ramaraj
Publikationsdatum
01.05.2013
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 5/2013
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-013-1639-9

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