Ag-Cu Alloy Nanoparticles Dispersion (Silver-Copper, Diameter: 50nm, Purity: 99.99%)

Typical Properties
CAS	11144-43-7
Catalog	ACM11144437-1
Molecular Weight	171.41 g/mol
Purity	99.9 %
Appearance	Liquid
Storage	5-30 °C
Color	Orange
Composition	AgCu
Concentration	100 ppm
Diameter	50 nm
pH	7
Precautions for use	Directly mix this material with other aqueous or aqueous solutions, and simply stir to achieve uniform mixing. Mixing within 5-30 degrees Celsius is recommended.
Quality Level	200
Shipping	Ambient Temperature
Solvent	Organic Solvent (DMF), IPA Ethanol, Water (ddH26O)

Overview

Description

This product is a highly dispersed nano-silver-copper bimetallic alloy hydrosol. It uses polymer material as a stabilizer and can be diluted for different antibacterial purposes. The particle size of the colloidal nano silver copper is between 1-7 nm, the average particle size is 3-5 nm, and the antibacterial concentration is less than 1 ppm. Can be diluted with purified water to any concentration of liquid (distilled water or deionized water above 15M ohms). It can also be added to aqueous or water-soluble liquids to achieve the purpose of antibacterial and sterilization. Nano-silver-copper bimetallic alloy is a new type of antibacterial material. Compared with traditional nano-silver material, its antibacterial concentration can be reduced by 3-5 times, and the amount of precious metal silver can also be reduced. Nano-silver copper has better antibacterial properties for fungi. Antibacterial and bactericidal ability is one of the materials to replace nano silver in the future.

Features

·Evenly dispersed, small particles
·Good compatibility, easy to disperse, easy to add a variety of systems
·Good system stability, reliable performance, safety and environmental protection
·High specific surface area, high loading, easy surface functionalization

Application

·Long-lasting disinfection and sterilization spray additive
·Antibacterial and bactericidal coating
·Other antibacterial material additives

Case Study

Simple Preparation Strategy for Silver-Copper Nanoparticle Dispersions

Zhu, Yan, et al. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021, 626, 127116.

A simple preparation strategy for colorless silver-copper nanoparticles (Ag-Cu NPs) dispersions was developed. The Ag-Cu NPs exhibit higher stability and better bactericidal effect than silver nanoparticles (Ag NPs). In addition, compared with the common dark yellow to dark brown Ag NPs, the development of the colorless Ag-Cu NPs also expands their application in light-colored antibacterial fabrics. The results show that this colorless dispersion has enhanced antibacterial effects against Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Candida albicans, and has broad application prospects in the medical, textile and disinfection industries.
· Synthesis of Colorless Ag-Cu NPs
Milli-Q water was used to dilute the 1000 ppm Ag NP dispersion to 10 ppm, before adding Cu (NO3)2 to a concentration of 80 ppm. The solution was placed in a drying oven at 85 ℃ for 5 h. Samples were prepared under different conditions including Ag NPs concentration, Cu2+ concentration, and whether to heat or not.
· Antibacterial Assay
In order to evaluate the antibacterial effect of Ag-Cu NPs, Gram-negative Pseudomonas aeruginosa, Gram-positive Staphylococcus aureus and Candida albicans yeast were used for antibacterial activity testing. In addition, the broth dilution method was used for MIC/MBC detection.

Antibacterial Mechanism of Silver-Copper Nanoparticle System and Its Application

Xinzhen Fan, et al. Biology, 2021, 10(2), 137.

Although both silver nanoparticles (Ag NPs) and copper nanoparticles (Cu NPs) have significant antibacterial properties, the Ag-Cu NPs system exhibits stronger antibacterial properties than either Ag NPs or Cu NPs alone. Overall, the antibacterial efficacy of the Ag-Cu NPs system follows the following order: Ag NPs ≈ Cu NPs < mixed Ag-Cu NPs < Ag-Cu nanoalloy.
· Antibacterial mechanism of Ag-Cu NPs system
1) Ag-Cu NPs exhibit antimicrobial properties through various mechanisms, including the release of metal ions, reactive oxygen species (ROS), contact killing, and a combined antimicrobial mechanism.
2) The release of ions from NPs, particularly Ag NPs, plays a significant role in antimicrobial activity by interacting with bacterial cells and affecting DNA and RNA.
· Antibacterial application of Ag-Cu NPs system
Applications of Ag-Cu NPs systems include aqueous disinfectants, antimicrobial coatings on substrates, food packaging materials, and air filter modifications. Among them, examples of suitable substrates for the Ag-Cu NPs system as antibacterial coatings include textiles (synthetic polymers and cotton) and implants (polymers, ceramics and metals).