Oxygen as an economic and ubiquitous oxidant plays a significant role in catalysis environmental remediation. However, the high thermodynamic stability of O₂ limits the practical application. Herein, we reported a novel Mo doped carbon nitride (Mo-CN/g-CN) homojunction via the in-situ growth strategy. The strong interaction between Mo-CN and g-C₃N₄ enhanced visible-light response and photogenerated electrons and holes pairs separation, which were beneficial for photocatalytic activity. Importantly, theoretical calculation and experiments confirmed that Mo atoms on the surface of Mo-CN/g-CN could provide abundant electrons to the adsorbed O₂ to promote the generation of O₂⁻, thus enhancing the photocatalytic performance. Consequently, the obtained Mo-CN/g-CN reveals excellent photocatalytic NO removal activity, demonstrating its promise for air purification. This current work gives a novel insight for O₂ activation in the application of photocatalytic environmental remediation.

氧气作为一种经济而普遍存在的氧化剂，在催化环境修复中起着重要作用。但是，O ₂的高热力学稳定性限制了实际应用。本文中，我们通过原位生长策略报道了一种新型的Mo掺杂氮化碳（Mo-CN / g-CN）同质结。Mo-CN与gC ₃ N ₄之间的强相互作用增强了可见光响应以及光生电子和空穴对的分离，这有利于光催化活性。重要的是，理论计算和实验证实的Mo-CN的表面上的Mo原子/克-CN可能被吸附o提供丰富电子₂，以促进产生Ò ₂ ^-，从而增强了光催化性能。因此，所获得的Mo-CN / g-CN显示出优异的光催化NO去除活性，表明其有望用于空气净化。目前的工作为光催化环境修复中的O ₂活化提供了新颖的见解。