Solar-driven dry reforming of methane (DRM) presents a promising approach to produce syngas from greenhouse gases. Nonetheless, it still suffers from low productivity, low light-to-fuel efficiency, and severe deactivation. Here, an Ni-TiO_x interfacial catalyst was engineered to exhibit a top-performing CO production rate of 5,686.4 mmol g_cat.⁻¹ h⁻¹ and an excellent light-to-fuel efficiency of 29.9% below 650°C. Further studies suggested that the partial encapsulation of Ni nanoparticles not only created electron-sufficient Ni-O_v-Ti³⁺ interfacial sites but also stabilized Ni nanoparticles and prevented metal sintering. The presence of oxygen vacancy-rich TiO_x enhanced CO₂ adsorption, which effectively hindered the formation of deposited carbon. The optical absorption in visible-infrared region as well as the separation of photogenerated carriers were also stimulated due to the strong metal-support interaction (SMSI) effect, which lowered the activation energy barrier and overcame thermal limitation for DRM reaction. This work provides a highly efficient photothermal catalyst for DRM reaction by tuning the SMSI state.

太阳能驱动的甲烷干重整（DRM）提供了一种利用温室气体生产合成气的有前途的方法。尽管如此，它仍然面临生产率低下、光燃料效率低和严重失活的问题。在此，Ni-TiO _x界面催化剂经过精心设计，具有 5,686.4 mmol g _{cat 的最佳 CO 生产率。} ⁻¹ h ⁻¹且在 650°C 以下时具有 29.9% 的优异光燃料效率。进一步的研究表明，部分封装Ni纳米颗粒不仅可以产生电子充足的Ni-O _v -Ti ³⁺界面位点，而且可以稳定Ni纳米颗粒并防止金属烧结。富含氧空位的TiO _x的存在增强了CO _{2 的}吸附，有效地阻碍了沉积碳的形成。由于强金属-载体相互作用（SMSI）效应，还刺激了可见光-红外区域的光吸收以及光生载流子的分离，降低了活化能垒并克服了DRM反应的热限制。这项工作通过调节SMSI状态为DRM反应提供了一种高效的光热催化剂。