Covalent organic frameworks (COFs) are new generation of porous materials constructed from light elements (such as carbon, oxygen and nitrogen) linked via covalent bonds. Herein, one-pot synthesis of the composite of a COF and two-dimensional (2D) nanomaterials (graphene oxide (GO), graphitic carbon nitride (g-C₃N₄), and boron nitride (BN)) was reported. Melamine is poly-condensed with terephthaldehyde in the presence of GO, g-C₃N₄, and BN leading to the formation of a series of highly cross-linked microporous hierarchical porous amine networks. The thermal behavior, surface morphology, and crystalline structure were studied using thermogravimetric analysis (TGA), differential thermal analysis (DTA), scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The prepared COF nanocomposites possessed a high surface area of 42-509 m² g⁻¹ with a hierarchical porous structure and high thermal stability. COF nanocomposites (COF@GO, COF@g-C₃N₄, and COF@BN) were explored as an adsorbent for dye removal anionic dyes (Eosin dye and fluorescein) and cationic dyes (Fuchsine, and methylene blue). The composite materials exhibit high adsorption efficiency of 100% with excellent selectivity compared to the pristine COF. The synergic effect of COF and 2D nanomaterials improves the adsorption performance of the materials.

共价有机骨架（COF）是新一代的多孔材料，由通过共价键连接的轻元素（例如碳，氧和氮）构成。在此，报道了COF和二维（2D）纳米材料（氧化石墨烯（GO），石墨氮化碳（gC ₃ N ₄）和氮化硼（BN））的复合物的一锅法合成。在GO，gC ₃ N ₄存在下，三聚氰胺与对苯二甲醛缩聚和BN导致形成一系列高度交联的微孔分层多孔胺网络。使用热重分析（TGA），差热分析（​​DTA），扫描电子显微镜（SEM），X射线衍射（XRD）和透射电子显微镜（TEM）研究了热行为，表面形态和晶体结构。制备的COF纳米复合材料具有42-509m ² g ^-1的高表面积，具有分级的多孔结构和高的热稳定性。COF纳米复合材料（COF @ GO，COF @ gC ₃ N ₄，和COF @ BN）被用作吸附剂，用于去除染料，其中阴离子染料（曙红染料和荧光素）和阳离子染料（品红和亚甲基蓝）。与原始COF相比，该复合材料具有100％的高吸附效率和出色的选择性。COF和2D纳米材料的协同作用提高了材料的吸附性能。