Metal-organic frameworks (MOFs) suffer from poor stability, particularly in harsh aqueous and chemical environments, limiting their use in pesticide removal. Therefore, incorporating MOFs into polymers offers advantages in this type of application. The novelty of the current study lies in the combination of Amberlite with amino-functionalized copper-based MOF (Cu-BDC-NH2) via in-situ technique, resulting in uniform particle size, high adsorption capacity, stability, and faster kinetic rates. Here, Amberlite was functionalized by introducing a sulfonate group in its backbone structure, and the two types of polymers were integrated with Cu-BDC-NH2 to adsorb the carbofuran pesticide from wastewater. AM-H, AM-SO3H, AM-Cu-BDC-NH2, and AM-SO3-Cu-BDC-NH2 were characterized by FT-IR, PXRD, BET surface area, SEM, and TGA analysis. TGA analysis indicated that the MOF-polymer AM-SO3-Cu-BDC-NH2 composite has higher thermal stability than AM-SO3H polymer alone. Due to its porosity, amine functionality, and potential for specific interactions with carbofuran, Cu-BDC-NH2@Amberlite represents a favorable adsorption substrate. The adsorption capabilities of AM-H, AM-SO3H, AM-Cu-BDC-NH2, and AM-SO3-Cu-BDC-NH2, were 136.8,248.04, 424.04, and 630.49 mg/g, respectively. The role of Amberlite and sulfonated Amberlite was supported by its functional groups, and the incorporation of MOF with Amberlite enhanced the stability and surface area of the MOF, making it a more effective adsorbent.