730807

Silver, dispersion

nanoparticles, 40 nm particle size (TEM), 0.02 mg/mL in aqueous buffer, contains sodium citrate as stabilizer

• Synonyme(s) : Colloidal silver
• Formule linéaire : Ag
• Numéro CAS: 7440-22-4
• Poids moléculaire : 107.87
• Numéro MDL: MFCD00003397
• Code UNSPSC : 12352302
• ID de substance PubChem : 329764597
• Nomenclature NACRES : NA.23

Propriétés

• Forme: nanoparticles
• Contient: sodium citrate as stabilizer
• Concentration: 0.02 mg/mL in aqueous buffer
• Indice de réfraction: n20/D 1.333
• Taille des particules: 40 nm (TEM)
• Densité: 0.990 g/mL at 25 °C
• Fluorescence: λ_em 412 nm FWHM 63 nm
• Température de stockage: 2-8°C
• Chaîne SMILES: [Ag]
• InChI: 1S/Ag
• Clé InChI: BQCADISMDOOEFD-UHFFFAOYSA-N

Description

Description générale

Our silver nanoparticles (40 nm in diameter) are spherical nanoparticles of metallic silver dispersed in an aqueous citrate buffer. This buffer stabilizes the dispersion; citrate ions adsorb onto the surface of the silver nanoparticles and create a protective layer that prevents aggregation. Because of the nanoparticles′ small size the nanoparticles exhibit quantum confined optical properties, most notably an emission wavelength of (λem) of412 nm with a full width at half maximum (FWHM) of only 63 nm, owing to the monodispersity of the particles. The optoelectronic properties in combination with a high surface area make our silver nanoparticles useful in biosensors and fluorescent imaging for the sensitive detection of biomolecules, pathogens, and environmental contaminants.

Application

• Silver as acrolein hydrogenation catalyst: intricate effects of catalyst nature and reactant partial pressures.: This study explores the use of silver as a catalyst for acrolein hydrogenation, highlighting the complex effects of catalyst nature and the partial pressures of reactants, which could inform future applications in industrial chemical processes (Bron et al., 2007).
• Surface-enhanced Raman analysis of sulfa drugs on colloidal silver dispersion.: This research discusses the application of surface-enhanced Raman spectroscopy (SERS) using colloidal silver dispersions for analyzing sulfa drugs, potentially enhancing detection methods in pharmaceutical research (Sutherland et al., 1990).

Informations sur la sécurité

• Pictogrammes: GHS09
• Mention d'avertissement: Warning
• Mentions de danger: H410
• Conseils de prudence: P273 - P391 - P501
• Classification des risques: Aquatic Acute 1 - Aquatic Chronic 1
• Code de la classe de stockage: 12 - Non Combustible Liquids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable