Evaluation of Photocatalytic Activity of the TiO2 Layer Formed on Ti by Thermal Oxidation
Evaluation of Photocatalytic Activity of the TiO2 Layer Formed on Ti by Thermal Oxidation
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DOI：
10.1007/978-4-431-55192-8_6
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
T. Narushima;S. Sado;N. Kondo;Kyosuke Ueda;Mitsuko Kawano;K. Ogasawara
中科院分区：
文献类型：
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作者：
T. Narushima;S. Sado;N. Kondo;Kyosuke Ueda;Mitsuko Kawano;K. Ogasawara
提出了两步热氧化作为制备含锐钛矿的TiO 2层的表面处理工艺，用于Ti和Ti合金。该方法包括在含CO气氛中处理（第一步）和随后在空气中处理（第二步）。在这一章中，首先，钛和钛合金上的TiO 2涂层的生物医学应用的现状进行了综述，然后我们最近的工作的相和微观结构的商业纯（CP）钛，Ti-25mass%Mo合金，和Ti-25mass%Nb合金两步热氧化制备的TiO 2层进行了描述。通过第二步温度等工艺参数控制TiO 2层中的锐钛型分数。最后，对Ti及Ti合金表面形成的TiO 2膜的光催化活性进行了评价，包括：水接触角、亚甲基蓝分解和抗菌效果的结果。
Two-step thermal oxidation was proposed for Ti and Ti alloys as a surface-treatment process for preparing an anatase-containing TiO2 layer. This process consisted of treatment in a CO-containing atmosphere (first step) and subsequent treatment in air (second step). In this chapter, first, the current status of TiO2 coating onto Ti and Ti alloys for biomedical applications is reviewed; then our recent work on the phase and microstructure of TiO2 layers prepared on commercially pure (CP) Ti, Ti-25mass% Mo alloy, and Ti-25mass% Nb alloy by two-step thermal oxidation is described. The anatase fraction in the TiO2 layer was controlled through process parameters such as the second-step temperature. Finally, photocatalytic activity of TiO2 layers formed on the Ti and Ti alloys is evaluated, including: results of water contact angle, decomposition of methylene blue, and antibacterial effects.