This invention provides an MXene-AP-HOPO self-supporting
composite membrane for
uranium-containing
wastewater treatment, its preparation method, and its application. Specifically, it relates to an MXene-AP-HOPO self-supporting
composite membrane for
uranium-containing
wastewater treatment. The
composite membrane is a three-dimensional porous self-supporting
membrane structure formed by amino-functionalized MXene nanosheets as a substrate and hydroxypyridinone functional monomers covalently coupled to the substrate via
amide bonds. The composite membrane of this invention, by leveraging the high specific coordination ability of HOPO for
uranyl ions and the excellent structural properties of MXene, solves the defects of HOPO due to its high water
solubility, such as easy
dissolution and loss in aqueous solutions, and the poor
reusability of existing HOPO-based adsorbent materials. It also overcomes the problems of traditional
powder adsorbents, such as difficult
solid-liquid separation, easy agglomeration, high recycling costs, and difficulty in adapting to continuous industrial processes, thus achieving efficient treatment of
uranium-containing
wastewater and convenient recycling and reuse of materials.