An efficient ternary Z-scheme visible-light-driven photocatalyst g-C₃N₄/Bp/MoS₂ (CBM) was fabricated by a hydrothermal-calcination method. The morphology of modified g-C₃N₄ was controlled by addition trace amount of black phosphorus (Bp) and different content of MoS₂. The results showed that optimal sample (CBM2) obtained the hollow porous structure that could dramatically inhibit the agglomeration and increase the specific surface area. Especially, the reasonable ternary Z-scheme structure could not only strengthen the visible-light harvest capacity, but also accelerate the photogenerated carriers separation and migration. In addition, the introduction of N vacancies via preparation could further inhibit the recombination of photoinduced electron-hole pairs. CBM possessed the super-high degradation efficiency (over 99%) of CIP within 60 min under visible-light irradiation. The apparent rate constant of the optimal sample increased by a factor of 6.0, 3.8 and 4.0 in comparison to that of CN, CN/Bp and CN/MoS₂, respectively. In particular, the experiments of radical scavenging and electron spin resonance signal trapping revealed that photoexcited holes and superoxide radical were identified as the dominant reactive species in the reaction systems. The main intermediates were determined by LC-MS/MS and the transfer mechanism of photogenerated carriers on Z-scheme structure was further proposed.

通过水热煅烧法制备了高效的三元Z方案可见光驱动的光催化剂gC ₃ N ₄ / Bp / MoS ₂（CBM）。改性gC ₃ N ₄的形貌受痕量黑磷（Bp）和不同含量的MoS _2的控制。结果表明，最佳样品（CBM2）获得了能显着抑制团聚并增加比表面积的中空多孔结构。特别是合理的三元Z结构不仅可以增强可见光的捕获能力，而且可以促进光生载流子的分离和迁移。此外，引进了N个空缺通过制备可以进一步抑制光诱导的电子-空穴对的重组。在可见光照射下，煤层气在60分钟内具有CIP的超高降解效率（超过99％）。与CN，CN / Bp和CN / MoS ₂相比，最佳样品的表观速率常数分别增加了6.0、3.8和4.0倍。特别地，自由基清除和电子自旋共振信号捕获的实验表明，光激发的空穴和超氧化物自由基被确定为反应体系中的主要反应物种。通过LC-MS / MS确定了主要中间体，并进一步提出了光生载流子在Z型结构上的转移机理。