The photocatalytic performance of gC₃N₄ is majorly restricted by insufficient collection of photogenerated charges on the surface during reaction due to highly dense stacking of lamellar structures with lateral size ranging in microns. This deficiency can be overcome by forming thin nanoflakes by systematically breaking the weak bonds that hold the gC₃N₄ framework without destroying the basic heptazine unit. With this aim, herein, a combination of three different strategies was implemented to design and develop, Ag-loaded and P-doped gC₃N₄ nanoflakes (Ag3-P1-NF-gC₃N₄). Using a systematic synthesis method, bulk gC₃N₄ was first converted into thin nanosheets, followed by fragmentation into nanoflakes, with a planar size up to 100 nm. P doping to replace the corner C atoms in the gC₃N₄ matrix (forming PN bonds) and intercalation of plasmonic Ag nanoparticles within the interlayers also assists in the bifurcation of the stacked layers and formation of nanoflake morphology. These strategies result in a significant increase in BET surface area to ∼196 m²/g from 12 m²/g of bulk gC₃N₄. Improved inter-planar and intra-planar charge mobility was recorded as a result of the reduced sizes. Doping with P also causes higher absorption of the visible spectrum in gC₃N₄ while the formation of heterojunction with Ag nanoparticles induces efficient separation of photo-generated charges. All these promoting photo-physical properties lead to an outstanding photocatalytic activity towards degradation of aqueous pollutants with reaction rates ∼20 times higher than bulk gC₃N₄. Complete mineralization of the pollutant and formation of non-toxic byproducts was also confirmed with suitable chromatography techniques.

gC ₃ N ₄的光催化性能主要受到反应过程中表面上光生电荷收集不足的限制，这是由于侧向尺寸在微米范围内的层状结构的高度致密堆积所致。通过系统地破坏保持gC ₃ N ₄框架的弱键而不破坏碱性庚嗪单元，可以通过形成薄的纳米薄片来克服这一缺陷。为此目的，本文实施了三种不同策略的组合以设计和开发载有Ag和掺P的gC ₃ N ₄纳米薄片（Ag3-P1-NF-gC ₃ N ₄）。使用系统合成方法，批量gC ₃首先将N ₄转换为纳米薄片，然后破碎为纳米薄片，其平面尺寸最大为100 nm。P掺杂以取代gC ₃ N ₄基质中的角C原子（形成P N键），并且等离子的Ag纳米粒子插入夹层中也有助于堆叠层的分叉和纳米薄片形态的形成。这些策略导致BET表面积从12 g ² / g的块状gC ₃ N ₄显着增加至196 m ² / g 。由于尺寸减小，记录了改善的平面内和平面内电荷迁移率。掺杂P也会导致gC中的可见光谱吸收更高₃ N _4，而与Ag纳米颗粒形成异质结会诱导光生电荷的有效分离。所有这些促进光物理性质的特性导致其对水污染物的降解具有出色的光催化活性，其反应速率比整体gC ₃ N ₄高20倍。合适的色谱技术也证实了污染物的完全矿化和无毒副产物的形成。