Samples of nanocrystalline graphite-like carbon nitride (CGCN) modified with magnesium chloride have been obtained. The synthesized Mg-CGCN samples have been characterized by UV and IR spectroscopies, X-ray diffraction, energy dispersive X-ray analysis, and scanning electron microscopy. It is found that Mg-CGCN exhibits 60% higher photocatalytic activity in the reaction of hydrogen evolution from aqueous ethanol solutions under visible light than undoped CGCN. This may be related to a change in electrophysical characteristics (potentials of allowed bands) resulting from the incorporation of Mg²⁺ ions into the CGCN structure, improved dissociation of photogenerated charges, and inhibition of their recombination.

已经获得了用氯化镁改性的纳米晶类石墨氮化碳（CGCN）样品。合成的 Mg-CGCN 样品已通过紫外和红外光谱、X 射线衍射、能量色散 X 射线分析和扫描电子显微镜进行了表征。研究发现，Mg-CGCN 在可见光下乙醇水溶液析氢反应中的光催化活性比未掺杂的 CGCN 高 60%。这可能与将 Mg ²⁺离子结合到 CGCN 结构中、改善光生电荷的解离和抑制它们的复合而导致的电物理特性（允许带的电位）的变化有关。