One-step etching–functionalization of MXene with preserved structural integrity for ultrahigh uranium extraction

Abstract

A one-step etching–functionalization strategy that preserves MXene structural integrity while grafting active sulfonic groups is reported herein. The self-supporting TCS membrane achieves 3576.3 mg g⁻¹ uranium extraction and retains 86% of its initial capacity after ten cycles, offering a scalable route for efficient recovery.