Gold Antibacterial Coating is Safer than Silver

Feb-23-15 Researchers have developed an antibacterial coating made from gold, which can be applied to a wide variety of surfaces and lacks the toxicity of silver.

The coating, created at the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, begins as liquid boron compounds that contain colloidal gold nanoparticles. Coating the object involves submerging it in the liquid and then adding a polymerizing agent, which causes the gold nanocomposites to deposit on the object within about twelve minutes.

Most significantly, the antibacterial action of the gold does not require that any toxic substances be released, requiring instead direct contact with bacteria. This means the nanocomposite will not release toxins into to body, and will remain active for longer. The team hopes to eventually see the coating used on bandages and other medical apparatus as well as on clothing like sportswear and socks.

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