Design of superhydrophilic surfaces on metallic substrates by the fabrication of Ti-containing mesoporous silica thin film
Design of superhydrophilic surfaces on metallic substrates by the fabrication of Ti-containing mesoporous silica thin film
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DOI：
10.1016/j.apcata.2010.08.011
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发表时间：
2010-10
影响因子：
5.5
通讯作者：
Yu Horiuchi;H. Ura;T. Kamegawa;K. Mori;H. Yamashita
中科院分区：
文献类型：
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作者：
Yu Horiuchi;H. Ura;T. Kamegawa;K. Mori;H. Yamashita
采用溶胶-凝胶/旋涂法在Al和Al - mg合金基底上制备了含ti介孔二氧化硅薄膜（Ti-MSTFs），其中包括两种不同的去除结构导向剂（SDA）的工艺。一种是煅烧，另一种是在紫外光照射下利用二氧化硅框架内四面体配位氧化钛基团的光催化去除。通过FT-IR、XRD和UV-vis表征了氧化钛的介孔结构和局部结构。水接触角测量结果表明，在两种金属基底上涂覆ti - mstf后，均成功形成了高度亲水表面。这些表面在紫外线照射下也表现出光诱导的超亲水性。
Ti-containing mesoporous silica thin films (Ti-MSTFs) have been prepared on Al and Al–Mg alloy substrates via a sol–gel/spin-coating method including two different processes for removal of a structure directing agent (SDA). One is calcination and the other is photocatalytic removal under UV-light irradiation utilizing photocatalysis of tetrahedrally coordinated titanium oxide moieties within the silica framework. Characterizations of mesoporous structures and local structures of titanium oxide moieties were performed by FT-IR, XRD, and UV–vis measurements. Water contact angle measurements revealed that highly hydrophilic surfaces were successfully formed on both metallic substrates by coating with Ti-MSTFs. These surfaces also exhibited photoinduced superhydrophilic properties under UV-light irradiation.