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https://www.selleckchem.com/products/ly2157299.html Antibacterial metal materials, including Cu- and Ag-containing alloy, have attracted much attention worldwide. As for the antibacterial mechanism of the antibacterial alloys, there are two different views metal ions sterilization and contact sterilization. For the purpose of revealing the key control factor, Titanium-silver (Ti-Ag) alloys with different silver contents were prepared and a surface acid etching was applied to change the silver ion release and the volume fraction of Ti2Ag on the surface. The microstructure, phase composition, elemental composition, surface roughness, hydrophilicity, silver ion release and antibacterial properties of Ti-Ag alloys were studied comprehensively by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), contact angle and roughness test, silver ion dissolution test and antibacterial test. The results have shown that the increasing of Ag content did not bring about any change to the surface roughness and hydrophilicity but enhanced the Ag ion release while the surface acid etching improved the hydrophilicity, enhanced the Ag ion release and made more Ti2Ag particles appear on the surface. The antibacterial experiments have shown that the antibacterial properties increased with the increasing of Ag content in Ti-Ag alloys and that the surface acid etching improved the antibacterial activity significantly. The calculated results and surface microstructure observation and XPS analysis demonstrated that the antibacterial activity of Ti-Ag alloys was mainly controlled by Ti2Ag particle in a contact sterilization mode. Silver ion release from Ti-Ag alloy also contributed to antibacterial activity of Ti-Ag, but the Ag ion sterilization was not the key antibacterial mechanism. Finally, the CCK-8 results showed that all Ti-Ag alloys exhibited good cell compatibility. V.A peculiar polygonal protein scaffolding that resembles to spectrin-bas
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