Abstract 2D organic g-C3N4 photocatalysts are low cost materials with facile fabrication, suitable bandgap, tunable functionalization, excellent thermal/chemical-physical stability and exceptional photocatalytic behavior, raising considerable interest in photocatalytic and redox research areas. The photocatalytic performance of g-C3N4 mostly relies on the separation/transfer of photo-generated carriers. The mobility properties of the carrier largely determine the formation of reactive species, which have a high impact on surface reactions in the photocatalytic systems based on g-C3N4. This review paper outlines the works carried out so far on the optimization of the carrier mobility dynamics of 2D g-C3N4 materials via the internal and external modification strategies. The peculiar layered planar structure of g-C3N4 allows charge carrier mobility at the interface, in-plane and interlayer, and mechanisms of the charge separation/transfer will also be discussed. Comprehensive conclusions and perspectives on the modification of g-C3N4 leading to satisfactory carrier mobility will be given as well.

中文翻译：

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用于推进光生载流子动力学的二维 g-C3N4：现状和挑战

摘要 二维有机 g-C3N4 光催化剂是低成本材料，具有易于制造、合适的带隙、可调功能化、优异的热/化学-物理稳定性和优异的光催化行为，引起了对光催化和氧化还原研究领域的极大兴趣。g-C3N4 的光催化性能主要依赖于光生载流子的分离/转移。载体的迁移特性在很大程度上决定了活性物质的形成，这对基于 g-C3N4 的光催化系统中的表面反应有很大的影响。这篇综述概述了迄今为止通过内部和外部改性策略优化 2D g-C3N4 材料的载流子迁移动力学的工作。g-C3N4 独特的层状平面结构允许电荷载流子在界面、面内和层间移动，并且还将讨论电荷分离/转移的机制。还将给出关于 g-C3N4 改性导致令人满意的载流子迁移率的综合结论和观点。