The invention discloses a pore-
diameter expanding method for a UiO-66
metal organic framework material. The pore-
diameter expanding method comprises the following steps of: taking and mixing 2.47 parts by weight of
zirconium tetrachloride, 1.47 parts by weight of
terephthalic acid and 95 parts by weight of N, N-
dimethyl formamide in a single-opening flask to carry out ultrasonic dissolving; putting in a
microwave oven, condensing and refluxing for 15 minutes, and carrying out
centrifugal separation; using
alcohol and N, N-
dimethyl formamide to wash a
solid product, taking 1 part by weight of
solid product, adding the
solid product into 20 parts by weight N, N-
dimethyl formamide solution with the concentration of dilute
sulfuric acid being 0.25-1mol / L, stirring for 24 hours, then carrying out
centrifugal separation, using N, N-dimethyl
formamide and
alcohol to wash, then
drying in an environment with the temperature of 60-150 DEG C, then putting into a
Soxhlet extractor, adopting
acetone as a
solvent to wash till siphoning for three times, after washing,
drying for 6 hours in an environment with the temperature of 80 DEG C, and obtaining a mesoporous UiO-66
metal organic framework material. The UiO-66
metal organic framework material can be used as an absorbent to be applied to treatment of organic dyestuff
wastewater.