Article ID Journal Published Year Pages File Type
1786472 Current Applied Physics 2013 6 Pages PDF
Abstract

•This method is relatively facile, novel and eco-friendly.•The synthesized powders have good anti-oxidation and antibacterial properties.•The chelating abilities of reaction increases with the increasing [TA]/[Ag] ratio.•Anti-oxidation properties of products increase with the increasing [Ag]/[Cu] ratio.•Antibacterial properties of products increase with the increasing [Ag]/[Cu] ratio.

Cu–Ag core–shell particles were fabricated from Cu particles and silver sulphate with the environmental-friendly TA (tartaric acid, C4H6O6) as reducing and chelating agent in an aqueous system. The influences of [TA]/[Ag] and [Ag]/[Cu] molar ratios on the formation of Ag coatings on the Cu particles were investigated. The SEM images and SEM–EDS analyses showed that [TA]/[Ag] = 0.5 and [Ag]/[Cu] ≥0.2, the Cu particles were coated with uniform Ag nanoparticles. XRD analyses revealed that for these Cu–Ag particles heated at 250 °C, the oxidation of Cu was significantly reduced. Both anti-Staphylococcus aureus (Gram-positive) and anti-Escherichia coli (Gram-negative) characteristics of this Cu–Ag composite particles showed satisfactory antibacterial ability. The characteristics of the composite Cu–Ag particles were discussed in detail.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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