The invention discloses an amphoteric ligand-based
lead metal-organic framework material and a preparation method thereof. The preparation method comprises the following steps: adding H3cbdcpCl and Pb(NO3)2 into a
mixed solution composed of deionized water,
acetonitrile and
methanol, uniformly mixing, and heating in a reaction kettle to react for a period of time, thereby obtaining yellow rhombictransparent crystals, namely the
metal-organic framework material of lead. The
metal-organic framework material of lead is a novel three-dimensional
metal-organic framework which is constructed by amphoteric ligands and has a three-dimensional SrAl2 topological structure, has good water stability, can be used in a
water environment, has stable properties and can be stored in air for a long time. The synthesis method disclosed by the invention is simple and rapid, low in cost, high in yield, high in
repeatability and easy for
mass production, popularization and use. The
lead metal-organic framework material has strong
fluorescence emission in an
ultraviolet light-visible light region, is suitable for
fluorescence detection in the field of
water pollution, and can selectively detect Cr2O7<2->, CrO4<2-> and Fe<3+> ions in
sewage through the change of
fluorescence intensity.