Synthesis of amino-functionalized Ti3C2Tx MXene by alkalization-grafting modification for efficient lead adsorption

High-quality amino-functionalized Ti3C2Tx MXene (alk-MXene-NH2) nanosheets were successfully synthesized by a facile alkalization-grafting modification for lead adsorption. The alk-MXene-NH2 achieved the highest BET specific area among all MXene-based adsorbents, and the generated abundant -NH2, -OH and -ONa complexing groups exhibited strong interactions with lead ions, resulting in attractively high adsorption capacity.