Zeolite-based core–shell adsorbent for the removal of toxic pollutants from aquatic environment: current challenges and opportunities

Zeolite-based core–shell adsorbents are a promising new technology for removing toxic pollutants from aquatic environments. These adsorbents have a core of zeolite, a porous material with high adsorption capacity and selectivity. The outer shell of the adsorbent is made of another material, such as polymer, activated carbon, or metal. This structure provides several advantages, such as increased adsorption capacity, selectivity, and adsorbent stability. Zeolite-based core–shell adsorbents have shown great potential to remove toxic pollutants from aquatic environments, such as azo dye, heavy metals, and pharmaceuticals. However, there are still some challenges in the research and development of these adsorbents, such as developing simple and economical synthesis methods, improving adsorbent stability under different water conditions, and developing adsorbents that can remove multiple toxic pollutants simultaneously. Despite these challenges, zeolite-based core–shell adsorbents are a promising technology for removing toxic pollutants from aquatic environments. These adsorbents have the potential to provide an effective and economical solution to this serious environmental problem.