TiO2-WO3 photoelectrochemical anticorrosion system with an energy storage ability
TiO2-WO3 photoelectrochemical anticorrosion system with an energy storage ability
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DOI：
10.1021/cm010024k
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发表时间：
2001-09-01
影响因子：
8.6
通讯作者：
Fujishima, A
中科院分区：
文献类型：
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作者：
Tatsuma, T;Saitoh, S;Fujishima, A
已知TiO 2涂层基于其在UV照射下产生的还原能量来保护一些金属（包括304型不锈钢）免受腐蚀。TiO 2涂层与WO 3涂层耦合作为电子池，其中可以存储还原能量。在304型不锈钢板上的WO 3膜可以通过在相同板上的UV照射的TiO 2涂层在3wt%NaCl水溶液（pH 5）中充电。带电荷的WO 3涂层可以保护不锈钢板免受腐蚀，即使在UV灯关闭后也是如此。因此，TiO 2涂层在白天保护板并使WO 3涂层带电，而带电的WO 3涂层在夜间保护板。充电-放电循环是可重复的。TiO 2-WO 3复合涂层也具有相同的效果。
TiO2 coatings are known to protect some metals, including type 304 stainless steel, from corrosion on the basis of its reductive energy generated under UV irradiation. A TiO2 coating is coupled with a WO3 coating as an electron pool, in which the reductive energy can be stored. A WO3 film on a type 304 stainless steel plate can be charged by a UV-irradiated TiO2 coating on the same plate, in a 3 wt % NaCl aqueous solution, PH 5. The charged WO3 coating can protect the stainless steel plate from the corrosion for a while even after the UV light is turned off. Thus, the TiO2 coating protects the plate and charges the WO3 coating during the day, and the charged WO3 coating protects the plate during the night. The charge-discharge cycles are repeatable. A TiO2-WO3 composite coating also has the same effects.