Extensive efforts toward titania (TiO₂) modification have been developed in order to overcome the shortcomings as an efficient photoanode for photoelectrochemical (PEC) water splitting. Herein, a unique morphology possessed fibrous silica titania (FST) fabricated by microemulsion method was used for the first time as a photoanode. The FST was characterized by XRD, Raman, N₂ adsorption–desorption, FESEM, TEM, FTIR, XPS, UV–vis/DRS, and PL. The results confirmed the creation of a bicontinuous concentric lamellar structure of FST with a high surface area. The inclusions of Ti in the silica matrix induced the Si-Ti interaction and narrowed the band gap. The FST photoanode exhibited a superior photocurrent density of 13.79 mA/cm² with 16.9 % solar-to-hydrogen (STH) efficiency, which is 2.5 times higher compared to commercial TiO₂ which performed at 5.51 mA/cm² with 6.8 % STH. Significantly, the conduction band of FST lies closer to the reduction potential of hydrogen compared to TiO₂, leading to the fast charge transfer and allowing spontaneous production of H₂. The fabrication of FST provided new insight into developing high-performance photoanode for enhanced PEC water splitting.

为了克服作为用于光电化学 (PEC) 水分解的高效光电阳极的缺点，已经对二氧化钛 (TiO _{2 ) 进行了广泛的修改。}在此，首次使用微乳液法制备的具有独特形态的纤维状二氧化硅二氧化钛（FST）作为光电阳极。FST 的特征在于 XRD、拉曼、N ₂吸附-解吸、FESEM、TEM、FTIR、XPS、UV-vis/DRS 和 PL。结果证实了具有高表面积的 FST 的双连续同心层状结构的产生。二氧化硅基质中的 Ti 夹杂物引起 Si-Ti 相互作用并缩小了带隙。FST 光电阳极表现出 13.79 mA/cm ^{2的优异光电流密度}具有 16.9% 的太阳能制氢 (STH) 效率，与商用 TiO 2 相比高 2.5 倍，商用 TiO ₂在 5.51 mA/cm ²下运行，STH 为 6.8%。_{值得注意的是，与 TiO 2}相比，FST 的导带更接近氢的还原电位，导致快速电荷转移并允许自发产生 H ₂。FST 的制造为开发用于增强 PEC 水分解的高性能光电阳极提供了新的见解。