A combined electrochemical anodization and ultraviolet light-assisted photochemical preparation technique has been used to prepare Cu/TiO₂, Ag/TiO₂, Cu@Ag/TiO₂, and Ag@Cu/TiO₂ nanotubes. X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS) were used to systematically characterize the crystalline phase and morphology, respectively, of the prepared nanotube films. The optical absorption properties of the samples were also studied using ultraviolet-visible (UV-Vis) absorption spectroscopy. The photoelectrochemical activity and photocathodic protection properties of 403 stainless steel were investigated using photogenerated open circuit potential, photogenerated current density, Tafel curves, and J-V curves. The effects of the type of particles deposited and the deposition sequence on their photocathodic protection properties were also studied. According to the results, the morphology and photoelectrochemical and photocathodic protection properties of the prepared samples are affected by the photodeposition sequence of the particles. The results also show that photodeposited TiO₂ nanotubes enhance the light absorption and photoelectrochemical properties under light illumination, thus greatly increasing the photocurrent density of the Cu/TiO₂ and Ag/TiO₂ nanotubes in comparison with bare TiO₂ nanotubes. In addition, the photogenerated potential drop of the photodeposited TiO₂ was greater than that of bare TiO₂. The open circuit potential (OCP) values of 403SS coupled with Cu/TiO₂, Ag/TiO₂, Cu@Ag/TiO₂, and Ag@Cu/TiO₂ under irradiation were −695 mV, −665 mV, −594 mV, and −574 mV, respectively. Silver- and copper-photodeposited TiO₂ nanotubes can be applied as new photoanode materials to provide good photogenerated cathodic protection for metals under light illumination.

结合电化学阳极氧化和紫外光辅助光化学制备技术已被用于制备Cu/TiO ₂、Ag/TiO ₂、Cu@Ag/TiO ₂和Ag@Cu/TiO _{2 。}纳米管。X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 与能量色散光谱 (EDS) 分别用于系统地表征制备的纳米管薄膜的结晶相和形态。还使用紫外-可见 (UV-Vis) 吸收光谱研究了样品的光吸收特性。采用光生开路电位、光生电流密度、Tafel曲线和JV曲线研究了403不锈钢的光电化学活性和光阴极保护性能。还研究了沉积的颗粒类型和沉积顺序对其光阴极保护性能的影响。根据结果​​，制备的样品的形貌、光电化学和光阴极保护性能受颗粒光沉积顺序的影响。结果还表明，光沉积的 TiO₂纳米管在光照下增强了光吸收和光电化学性能，因此与裸TiO ₂纳米管相比，大大提高了Cu/TiO ₂和Ag/TiO ₂纳米管的光电流密度。此外，光沉积TiO ₂的光生电位降大于裸TiO ₂的光生电位降。403SS与Cu/TiO ₂、Ag/TiO ₂、Cu@Ag/TiO ₂和Ag@Cu/TiO ₂偶联的开路电位（OCP）值为-695 mV、-665 mV、-594 mV和−574 mV，分别。银和铜光沉积的 TiO ₂ 纳米管可作为新型光阳极材料，在光照下为金属提供良好的光生阴极保护。