Luca Geranio

Scuola universitaria professionale della Svizzera italiana, ICIMSI, Department Member

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Research Interests:
Biogas, Anaerobic Digestion, and Environmental Engineering
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Papers

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Publication Date: 2009

Publication Name: Environmental Science & Technology

Research Interests:
Environmental Science, Textiles, Nanoparticle, Risk assessment, Multidisciplinary, and 10 moreEnvironmental science and technology, Metal Nanoparticles, Silver, Surfactant, Dissolution, Solubility, Risk Assessment, Oxidant, Particle Size Distribution, and Hydrogen-Ion Concentration
(Environmental science and technology, Metal Nanoparticles, Silver, Surfactant, Dissolution, Solubility, Risk Assessment, Oxidant, Particle Size Distribution, and Hydrogen-Ion Concentration)

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A new and efficient synthetic route to fluorescent and 14C-double-labeled silica-based nanoparticles (NPs) is described. The synthesis has been carried out using the “oil-in-water” micro-emulsion technique. Fluorescent and radioactive labeling have been achieved entrapping labeled poly(ethylene glycol) (PEG) molecules in the NPs. The produced particles have been analyzed by means of scanning electron microscopy, photon correlation spectroscopy, confocal microscopy, scintillation counting and oxidation/combustion experiments. Fluorescence quenching experiments confirm that the label is entrapped in the particles. The results presented suggest that the silica matrix does not block the β-radiations emitted from the labeled PEG molecules entrapped in the NPs.