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Nanometer blocks of amide-functionalized Fe(Ⅲ)-based metal-organic frameworks,NH2-MIL-53(Fe),were prepared via ultrasonic method without any surfactants at room temperature and atmospheric pressure.The characterization for the as-prepared nano-structured MOFs was established by XRD,SEM,TEM,XPS and N2 adsorption-desorption.The as-prepared sample with high specific surface area(179.9 m2·g-1)showed excellent adsorption for methylene blue in the liquid phase.The as-prepared NH2-MIL-53(Fe)adsorbent seems to be a promising material in practice for organic dye removal from aqueous solution.