Photocatalytic hydrogen peroxide (H₂O₂) by oxygen and phosphorus co-doped graphitic carbon nitride (C₃N₄) with cobalt phosphate (CoP) cocatalyst is investigated. The photocatalyst powder of CoP-C₃N₄ 1:n, n = 0–4, n is the weight ratio of cyanuric acid added) was synthesized by melamine cyanurate template method. Characterization of the catalyst was performed by X-ray diffraction analysis, and scanning electron microscopy, X-ray photoemission spectra, and fluorescence decay spectra. Oxygen doping was performed by the melamine and cyanuric acid template method, followed by phosphorus doping of the C₃N₄ backbone by the introduction of CoP. Co-doping of O and P atom facilitated charge transfer on the C₃N₄ backbone, while CoP facilitated charge separation at the C₃N₄ interface. The CoP-C₃N₄ (1:4) photocatalyst increased H₂O₂ production rate by 293 % compared to that of the cyanuric acid-free photocatalyst and also achieved the photocatalytic oxygen evolution from water. These results indicate that O,P co-doped CoP-C₃N₄ can perform sacrificial agent-free hydrogen peroxide under visible light irradiation.

研究了氧磷共掺杂石墨氮化碳(C ₃ N ₄ )与磷酸钴(CoP)助催化剂的光催化过氧化氢(H ₂ O _{2 )。}采用三聚氰胺氰尿酸酯模板法合成了CoP-C ₃ N _{4 1:n（n=0~4，n为加入的三聚氰酸的重量比）光触媒粉体。}通过X射线衍射分析、扫描电子显微镜、X射线光电子发射光谱和荧光衰减光谱对催化剂进行表征。采用三聚氰胺和三聚氰酸模板法进行氧掺杂，然后对C ₃ N _{4进行磷掺杂}通过引入 CoP 来实现骨干。O和P原子的共掺杂促进了C ₃ N ₄主链上的电荷转移，而CoP促进了C ₃ N ₄界面上的电荷分离。与不含氰尿酸的光催化剂相比，CoP-C ₃ N ₄ (1:4)光催化剂将H ₂ O _{2产率提高了293%，并且还实现了光催化从水中析出氧气。}这些结果表明O,P共掺杂CoP-C ₃ N ₄在可见光照射下可以实现无牺牲剂的过氧化氢。