Gold (Au) Nanoparticles Water Dispersion (Colloidal Gold)
Purity: 99.99%, Size: 20–30 nm, 172 ppm
Description
Our Gold (Au) Nanopowder/Nanoparticles Water Dispersion, also known as colloidal gold, is produced using ultra-high-purity 99.99% gold nanoparticles to deliver exceptional performance across advanced research and industrial applications. This dispersion provides precise and stable nanoparticle distribution, making it ideal for fields requiring high reliability and consistency.
It is suitable for use in electronics, biotechnology, energy storage, catalysis, and optoelectronics. The high surface area of the nanoparticles enhances reactivity, while the aqueous dispersion ensures uniform distribution for dependable and reproducible results.
Technical Properties
| CAS Number | 7440-57-5 |
|---|---|
| Form | Dispersion |
| Solvent | Water (customizable) |
| Purity (%) | 99.99% |
| Concentration | 172 ppm (0.01 wt%) |
| pH | 7 |
| Average Particle Size (nm) | 20–30 nm |
| Color | Red–Purple |
| Storage Temperature | 2–8 °C |
Applications
This research-grade aqueous gold nanopowder dispersion is odorless, non-toxic, and exhibits excellent catalytic activity. Gold nanoparticles in this dispersion can neutralize free radicals in human cells, contributing to their growing importance across various industries. The dispersion is highly stable, well-dispersed, and ensures consistent performance in diverse applications.
Biomedical and Life Sciences: Used extensively in medical diagnostics (including rapid tests), drug delivery, imaging, and cancer therapies. Their biocompatibility and unique optical behavior allow precise targeting, visualization, and treatment. A common example is lateral flow assays, where gold nanoparticles create the visible red test line.
Chemical and Biological Sensing: Gold nanoparticles shift color when they aggregate or interact with specific molecules, making them valuable in sensors for chemicals, toxins, and biological markers.
Catalysis: Gold dispersions act as efficient nanoscale catalysts, especially in oxidation and environmental processes, benefiting both industrial and research applications.
Electronics and Photonics: Applied in nanocircuits, conductive materials, and photonic devices due to their plasmonic properties and ability to manipulate light at the nanoscale.
Coatings and Materials Science: Integrated into coatings, inks, and surface treatments to provide optical enhancement, antibacterial effects, and improved aesthetic qualities.
Handling and Storage
This gold nanoparticle dispersion contains no added chemical reagents, ensuring a clean formulation. It should be stored away from direct sunlight and handled by trained professionals under proper storage conditions. If mild agglomeration occurs after extended storage, the dispersion can be re-homogenized by gentle mixing before use.
