Herein, nanosheets of g-C₃N₄ (CN), prepared using a green ultrasonication process under various conditions, were combined with Ag/black TiO₂ nanocomposites (AgBT) to create two-dimensional (2D) CN/Ag/black TiO₂ tri-composites (CNAgBT). The thickness of the CN sheets varied with the ultrasonication conditions. The CNAgBT sample prepared using ultrasound-treated CN exhibited the highest average photocatalytic efficiencies for the degradation of two model pollutants, followed in decreasing order by AgBT, black TiO₂ (BT), sheet CN, bulk CN, and TiO₂. The order of pollutant degradation efficiencies by the photocatalysts was consistent with that of the charge carrier separation efficiencies. The degradation efficiency of the CNAgBT increased as the CN-to-AgBT ratio increased from 0.05 to 0.1, but decreased gradually for higher ratios between 0.15 and 0.20, indicating a lower optimal CN-to-AgBT ratio. A plausible photocatalytic degradation mechanism for the CNAgBT nanocomposites was proposed. Additionally, CNAgBT with a CN-to-AgBT ratio of 0.1 displayed a higher hydrogen generation rate with a maximum value of 21.5 mmol g^-1 over 5 h than those of the AgBT and BT. Overall, the CNAgBT prepared using ultrasonication-treated CNs showed enhanced photocatalytic performance for both pollutant degradation and hydrogen generation.

在此，将在各种条件下使用绿色超声处理制备的gC ₃ N ₄（CN）纳米片与Ag /黑色TiO ₂纳米复合材料（AgBT）组合，以创建二维（2D）CN / Ag /黑色TiO ₂三聚体-复合材料（CNAgBT）。CN片的厚度随超声条件而变化。使用超声处理的CN制备的CNAgBT样品对两种模型污染物的降解表现出最高的平均光催化效率，其后依次为AgBT，黑色TiO ₂（BT），片状CN，块状CN和TiO ₂降序排列。光催化剂对污染物降解效率的顺序与载流子分离效率的顺序一致。CNAgBT的降解效率随着CN / AgBT的比率从0.05增加到0.1而增加，但随着0.15和0.20之间的比率增加，降解效率逐渐降低，这表明较低的CN / AgBT最佳比率。提出了一种合理的光催化降解CNAgBT纳米复合材料的机理。另外，CN / AgBT比为0.1的CNAgBT与AgBT和BT相比，在5小时内显示出更高的氢气生成速率，最大值为21.5 mmol g ^-1。总体而言，使用超声处理的氯化萘制备的CNAgBT对污染物的降解和氢气的产生均表现出增强的光催化性能。