Gold (Au) Nanopowder/Nanoparticles 

Purity: 99.99+%, Size: 10-30 nm 

Gold (Au) Nanopowder/Nanoparticles are high-purity (99.99+%) metallic nanostructures characterized by a precise 10-30 nm particle size distribution. At this nanometric scale, gold exhibits unique localized surface plasmon resonance (LSPR) properties, making it highly responsive to electromagnetic and optical stimuli. These ultra-fine particles offer an exceptional surface-area-to-volume ratio, facilitating high-density surface functionalization with various thiolated ligands, polymers, or biomolecules. Unlike bulk gold, these nanoparticles possess significant catalytic activity and superior biocompatibility, enabling their use in sensitive diagnostic and therapeutic environments. Engineered for maximum stability and minimal elemental impurities, this nanopowder is a premier choice for laboratories and industries seeking advanced performance in electronics, catalysis, and nanomedicine.

Technical Properties

Applications

• Biomedical and Healthcare: Gold nanoparticles act as sophisticated contrast agents for CT and photoacoustic imaging, providing high-resolution visualization of biological tissues. They are extensively used as targeted drug delivery carriers and mediators in photothermal tumor ablation, where they convert light into localized heat to destroy malignant cells. Additionally, their integration into antimicrobial coatings for implants prevents biofilm formation and accelerates wound healing.
• Electronics and Conductive Materials: Utilized in the formulation of high-precision conductive inks for printed and flexible circuits. AuNPs enable the fabrication of surface-enhanced Raman scattering (SERS) sensors for ultra-sensitive chemical detection and serve as reliable, low-resistance contacts in nanoelectronic devices and semiconductors.
• Advanced Catalysis: As highly efficient heterogeneous catalysts, they drive critical reactions such as the selective oxidation of alcohols and low-temperature CO oxidation. In the renewable energy sector, AuNPs are employed in electrocatalysis to improve CO₂ reduction and oxygen-reduction reactions (ORR) within fuel cells.
• Agriculture and Food Safety: Functionalized AuNPs power rapid-response colorimetric or electrochemical test strips for detecting pesticides, pathogens, and mycotoxins. When embedded into smart packaging, they provide real-time visual signals for food spoilage and hazardous gas emissions.
• Environmental Protection: AuNP-based SERS sensors are used for the parts-per-billion (ppb) detection of heavy metals and organic pollutants in water sources. Furthermore, when incorporated into specialized membranes, they catalyze the degradation of pollutants under light and facilitate the selective removal of arsenic and mercury.
• Sensing and Diagnostics: Due to their intense optical properties, they are fundamental components in lateral flow assays (like pregnancy or rapid virus tests), providing a clear visual readout through plasmonic color changes.

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