Silver ion-exchanged sodium titanate and resulting effect on antibacterial efficacy

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• 作者：Sang-Bae Lee^a ; ^b ; Unursaikhan Otgonbayar^a ; ^b ; Ju-Hye Lee^a ; ^b ; Kwang-Mahn Kim^a ; ^b ; Kyoung-Nam Kim ; ^a ; ^b ; ^{kimkn@yuhs.ac"" rel=""nofollow}
• 关键词：Silver ; Ion-exchange ; Sodium-titanate ; Antibacterial activity
• 刊名：Surface and Coatings Technology
• 出版年：2010
• 出版时间：25 December 2010
• 年：2010
• 卷：205
• 期：Complete
• 页码：S172-S176
• 全文大小：1170 K

文摘

Surface modification with silver ion is an effective way to reduce infections. In the present work, the effect of silver ion-exchanged sodium titanate on the titanium has characterized by thin film X-ray diffraction analysis (TF-XRD) and high resolution scanning electron microscopy (HR-SEM). Antibacterial activity of silver ion-exchanged sodium titanate on titanium was assessed by the plate-counting method using against Staphylococcus aureus. The results show that silver ion-exchanged samples improve the antibacterial activity depends on NaOH concentration in electrolyte while the titanium oxide layer shows a significant decline. It is also found that the apatite-forming ability of silver ion-exchanged samples was showed after 7 days by immersion in SBF. In conclusion, silver ion-exchange method to the sodium-titanate is favorable to increase the antibacterial activity of titanium surfaces as well as apatite-forming ability.