Dye pollution is a significant global environmental issue. To address this problem, various adsorbents have been employed, but traditional adsorbents often suffer from poor reusability and limited adsorption efficiency. Metal-organic frameworks (MOFs), which have emerged in recent years, have excellent physicochemical properties, but their application in wastewater treatment is limited by their polycrystalline, powdered state. In this paper, nitro functional groups were added to MIL-88B. The specific surface area of MIL-88B-NO