Abstract An ordered TiO2 nanotube array (NTA) film was first fabricated on a Ti substrate by anodization, β-Bi2O3 nanoparticles were then electrodeposited on the film for obtaining a heterostructured β-Bi2O3-TiO2 NTA composite film with enhanced photocathodic protection performances. Compared to the bare TiO2 NTA film, the composite film showed a wider light absorption region and higher charge carrier separation efficiency. Under white light illumination, the composite film as a photoanode made the potential of 403 stainless steel in a 0.5 M NaCl solution decrease by 450 mV relative to its corrosion potential, showing an effective photoelectrochemical cathodic protection effect.

中文翻译：

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用于光电化学阴极保护应用的异质结构β-Bi 2 O 3 -TiO 2 纳米管阵列复合膜的制备

摘要 首先通过阳极氧化在 Ti 衬底上制备有序的 TiO2 纳米管阵列 (NTA) 薄膜，然后在薄膜上电沉积 β-Bi2O3 纳米颗粒，以获得具有增强光阴极保护性能的异质结构 β-Bi2O3-TiO2 NTA 复合薄膜。与裸 TiO2 NTA 薄膜相比，复合薄膜表现出更宽的光吸收区域和更高的电荷载流子分离效率。在白光照射下，复合膜作为光阳极使403不锈钢在0.5 M NaCl溶液中的电位相对于其腐蚀电位降低了450 mV，显示出有效的光电化学阴极保护作用。