NanoXact Silver Shelled Gold – Bare (Citrate)

Bimetallic core-shell nanoparticles with tunable core diameter and shell thickness are unique nanomaterials with controllable optical properties and atomic ratios, of interest for plasmonic studies and as highly-characterized constructs for single particle elemental analysis.

Citrate is one of our most popular surface options; the “bare” surface is ideal for displacement with other molecules or ligands. Learn more ❯

NanoXact materials are high quality, unagglomerated and monodisperse nanoparticles. Learn more ❯

Provided at 1 mg/mL (total gold and silver content) in aqueous 2 mM citrate.
TEM Diameter Size Distribution (CV) Example Certificate of Analysis

20 nm ± 3 nm < 15% Download Example CoA

60 nm ± 4 nm < 15% —

80 nm ± 4 nm < 15% Download Example CoA

Note: ranges below are dependent on diameter
- Hydrodynamic diameter (DLS): TEM diameter plus 2 to 12 nm
- Zeta potential: –15 to –60 mV
- pH of solution: 7.0 to 8.5
- Particle surface: sodium citrate
- Solvent: Milli-Q water
- Peak wavelength (λ_max): 400 to 500 nm
Documentation
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- Safety Data Sheets (SDS):
NCX University

TEM Diameter	Size Distribution (CV)	Example Certificate of Analysis
20 nm ± 3 nm	< 15%	Download Example CoA
60 nm ± 4 nm	< 15%	—
80 nm ± 4 nm	< 15%	Download Example CoA