Searching for effective approaches of accelerating charge separation and broadening optical absorption is critical for designing a high-performance photocatalytic system. Herein, a photocatalyst based on the non-metal group doped porous ultrathin g-C₃N₄ nanosheets (CNB NS) was prepared through a combined methodology of precursor reforming and thermal condensation. The synergistic effect of non-metal group doping and porous ultrathin nanosheet-architecture not only endow the material with improved light harvesting and regulated band structure, but also facilitate the electron–hole pair separation, supplying numerous active reactive sites and electron diffusion channels. As a result, the CNB NS photocatalyst exhibits a highly efficient photocatalytic H₂ performance (the apparent quantum efficiency is 7.45% at 420 nm) and stability in water under the visible light, which is approximately 13 times higher than that of pure g-C₃N₄. This study may open a new perspective for designing the non-metal group doped g-C₃N₄ photocatalyst and further fabricate other advanced photocatalytic materials.

中文翻译：

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多孔超薄gC ₃ N ₄纳米片中非金属基团对协同改善光催化氢释放的掺杂作用†

寻找加速电荷分离和扩大光吸收的有效方法对于设计高性能光催化系统至关重要。在此，通过前体重整和热缩合的组合方法制备了基于非金属基团掺杂的多孔超薄gC ₃ N ₄纳米片（CNB NS）的光催化剂。非金属基团掺杂和多孔超薄纳米片结构的协同作用不仅使材料具有改善的光收集和可调节的能带结构，而且还促进了电子-空穴对的分离，提供了许多活性反应位点和电子扩散通道。结果，CNB NS光催化剂表现出高效的光催化H _2。性能（在420 nm时的表观量子效率为7.45％）和可见光在水中的稳定性，约为纯gC ₃ N _4的13倍。这项研究可能为设计非金属基团掺杂的gC ₃ N ₄光催化剂和进一步制造其他先进的光催化材料开辟新的前景。