The combination of copper-doped TiO₂ nanofibers (Cu-TiO₂ NFs) with acetic acid-treated graphitic carbon nitride (g-C₃N₄) provided an efficient photocatalyst for hydrogen (H₂) evolution. Nanosheets of g-C₃N₄ (0.2, 0.3, and 0.4 wt%) integrated with Cu-doped TiO₂ NFs displayed improved photocatalytic H₂ evolution efficiency. The highest H₂ evolution of 1.30 mmol/g was recorded for 0.3 wt% g-C₃N₄ coated on Cu-TiO₂ NFs, which was 18.64-fold higher than the H₂ evolution of g-C₃N₄ alone and 8.15-fold higher than the H₂ evolution of pure TiO₂ NFs. As indicated by different experimental characterizations, the incorporation of photosensitizers, including copper and g-C₃N₄ nanosheets, enabled enhanced photoresponse and successful separation of charge carriers. Furthermore, the synergistic effect between 1D and 2D structures resulted in heterojunction formation which helped in superior charge separation consequently enhancing photocatalytic H₂ evolution. Thus, this work can provide new ideas and insights for the synthesis of non-precious metal-based photocatalysts.

铜掺杂的 TiO ₂纳米纤维 (Cu-TiO ₂ NFs) 与乙酸处理的石墨氮化碳 (gC ₃ N _{4 ) 的组合为析氢 (H 2} )提供了有效的光催化剂。_{与Cu掺杂的TiO 2} NFs结合的gC ₃ N ₄ (0.2、0.3和0.4 wt%)纳米片显示出提高的光催化H ₂释放效率。在 Cu-TiO _{2 NFs 上涂覆 0.3 wt% gC 3} N ₄的最高 H ₂释放量为 1.30 mmol/g，比gC的 H ₂释放量高 18.64 倍_单独的3 N ₄比纯 TiO ₂ NFs的 H ₂释放高 8.15 倍。正如不同的实验表征所表明的，光敏剂的加入，包括铜和 gC ₃ N ₄纳米片，能够增强光响应并成功分离电荷载流子。此外，一维和二维结构之间的协同效应导致异质结的形成，这有助于出色的电荷分离，从而增强光催化H ₂的释放。因此，这项工作可以为非贵金属基光催化剂的合成提供新的思路和见解。