Solar-driven CO₂ conversion is an attractive option for producing usable fuels and chemicals. However, traditionally synthesized TiO₂ materials suffer from the low activity of CO₂ conversion into multi-carbon products. In this study, for the first time, strong magnetic fields were introduced into the synthesis of TiO₂. By regulating the splitting ratio of high-angle and low-angle quantum orbitals, we developed a new type of TiO₂{100} facets containing more active low-coordinate Ti atoms. In-situ Fourier transform infrared spectroscopy (FTIR) and DFT calculations both revealed that the interfacial charge redistribution and lattice structure of such TiO₂{100} are beneficial to the coupling of adsorbed CO∗. This enables highly efficient conversion of CO₂ into C₂H₅OH with a yield rate of 6.16 μmol g⁻¹ h⁻¹, which is 22-fold higher than that of pristine TiO₂. This strategy provides a new platform for desirable photocatalyst synthesis and furthers our understanding of the relationship between atomic orbital control and CO₂ conversion.

太阳能驱动的CO ₂转化是生产有用的燃料和化学品的有吸引力的选择。然而，传统上合成的TiO ₂材料具有将CO ₂转化为多碳产物的低活性的缺点。在这项研究中，首次将强磁场引入了TiO ₂的合成中。通过调节高角度和低角度量子轨道的分裂比，我们开发了一种新型的TiO ₂ {100}面，该面包含更多的活性低配位Ti原子。原位傅里叶变换红外光谱（FTIR）和DFT计算都表明，这种TiO ₂的界面电荷重新分布和晶格结构{100}有利于吸附CO *的偶联。这使得能够以6.16μmolg ^-1 h ^-1的产率将CO ₂高效地转化为C ₂ H ₅ OH ，这是原始TiO _2的22倍。该策略为理想的光催化剂合成提供了新的平台，进一步加深了我们对原子轨道控制与CO ₂转化之间关系的理解。