Dimensionality-hybrids are potentially functional materials due to their great advantages in obtaining high light absorption and effective electron transfer, which are vital in energy conversion and electronic devices. Herein, a novel dimensionality-hybrid was facilely fabricated by in-situ assembling two-dimensional Co (II) meso-tetra (4-carboxyphenyl) porphyrin metal organic framework (Co-TCPP MOF) on one-dimensional titanate nanotubes (TNTs). The enhanced light absorption, abundant active sites and improved charge separation and transfer were achieved in the special “dimensionality-hybrid”. Importantly, the obtained TNTs/Co-TCPP MOF exhibited large photocatalytic H₂ production compared with some comparisons without adding any cocatalysts. Furthermore, the mechanism of charge transition in the nanohybrid was explored by hydroxyl radical trapping experiment. This research will pave a new way in the fabrication and mechanism exploration of the nano photocatalysts for efficient H₂ evolution.

多维混合材料是潜在的功能材料，因为它们在获得高光吸收和有效电子转移方面具有巨大优势，这在能量转换和电子设备中至关重要。在此，通过在一维钛酸盐纳米管 (TNT) 上原位组装二维 Co (II) 内消旋四 (4-羧基苯基) 卟啉金属有机骨架 (Co-TCPP MOF)，轻松制备了一种新型维杂化物。在特殊的“维度混合”中实现了增强的光吸收、丰富的活性位点和改进的电荷分离和转移。重要的是，所获得的 TNTs/Co-TCPP MOF 表现出大的光催化 H ₂生产与不添加任何助催化剂的一些比较相比。此外，通过羟基自由基捕获实验探索了纳米杂化物中电荷跃迁的机理。_{该研究将为高效析氢}纳米光催化剂的制备和机理探索开辟一条新途径。