Artificial photocatalysis provides a promising approach for CH₄ selective conversion into CH₃OH under mild reaction conditions. However, the over-oxidization by the active oxygen radical species impedes for the high efficiency of photocatalytic conversion of CH₄ to CH₃OH. Here, we proposed a strategy of the transfer of key intermediates •CH₃ from host photocatalyst surface for stability to improve CH₄ conversion to CH₃OH products. A Co₃O₄/ZnO composited photocatalyst was designed to efficiently convert CH₄ to CH₃OH with a rate of 366 μmol g^-1h⁻¹ under simulated sunlight irradiation, while the parent ZnO only completely overoxidized CH₄ into CO₂. We uncovered that Co₃O₄ played a new role as the active site for the adsorption of •CH₃ key intermediates and the desorption of CH₃OH to suppress CH₄ overoxidation on ZnO surface. This work highlights cocatalyst for •CH₃ intermediate stabilization to control the pathway of photocatalytic selective oxidation of CH₄ into CH₃OH.

人工光催化为在温和反应条件下将 CH ₄选择性转化为 CH ₃ OH提供了一种有前景的方法。_{然而，活性氧自由基物种的过氧化阻碍了CH 4}至CH ₃ OH的高效光催化转化。在这里，我们提出了一种将关键中间体•CH ₃从主体光催化剂表面转移以提高稳定性以提高CH ₄转化为CH ₃ OH 产物的策略。设计了一种Co ₃ O ₄ /ZnO复合光催化剂，以366 μmol g ^-1的速率有效地将CH ₄转化为CH _{3 OH}h ^-1在模拟太阳光照射下，而母体ZnO仅将CH ₄完全过氧化成CO ₂。我们发现Co ₃ O _{4作为吸附•CH 3}关键中间体和解吸CH ₃ OH的活性位点发挥了新的作用，以抑制ZnO 表面上的CH _{4过氧化。}这项工作重点介绍了用于 •CH _{3中间体稳定化的助催化剂，以控制 CH 4}光催化选择性氧化成 CH ₃ OH 的途径。