To achieve a highly efficient charge transfer and separation for photocatalysis, we propose a bridging effect to construct a direct charge transfer path in g-C₃N₄ via introducing Co atoms into the nitride pores of g-C₃N₄ to trigger a superficial potential trap. By utilizing such superficial potential trap, the Co atom can bridge the ultrafine Pt NPs and g-C₃N₄ as catalyst for hydrogen evolution reaction. The bridging effect of Co heteroatom in g-C₃N₄(Co)/Pt can rapidly transfer the photo-generated electrons on g-C₃N₄ to Pt NP surface, thus significantly improving the charge separation efficiency. Moreover, the water molecule is more easily dissociated by Co atom bridge, enabling its kinetics favorable for photocatalytic hydrogen reaction. As a consequence, the photocatalytic H₂ evolution rate of g-C₃N₄(Co)/Pt reaches 7.145 mmol g^-1 h^-1 with an excellent apparent quantum efficiency of 19.0% at 420 nm, which is 145.8 times than that of pristine g-C₃N₄.

为了达到光催化了高效电荷转移和分离，我们提出了一个桥接效应来构造GC直接电荷传输路径₃ Ñ ₄ 经由引入Co原子注入到氮化物孔GC的₃ Ñ ₄以触发肤浅电位阱。通过利用这种表面势阱，Co原子可以桥接超细的Pt NPs和gC ₃ N ₄作为氢析出反应的催化剂。Co杂原子在gC ₃ N ₄（Co）/ Pt中的架桥作用可以将光生电子快速转移到gC ₃ N _4上到Pt NP表面，从而大大提高了电荷分离效率。而且，水分子更容易被Co原子桥解离，从而使其动力学有利于光催化氢反应。结果，gC ₃ N ₄（Co）/ Pt的光催化H ₂释放速率达到7.145 mmol g ^-1 h ^-1，在420 nm处具有19.0％的优异表观量子效率，是原始碳的145.8倍。 gC ₃ N ₄。