ZrO2 for heavy metal wastewater treatment and preparation method and application thereof
A technology for wastewater treatment and heavy metals, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of poor effect and low adsorption capacity, and achieve improved adsorption capacity and good adsorption. effect of effect
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[0029] In the present invention, there is no special limitation on the source of the UiO-66 metal-organic framework material, and the commercially available products of the above-mentioned UiO-66 metal-organic framework material can be used or self-prepared by a preparation method well known to those skilled in the art. . In the present invention, the preparation method of the UiO-66 metal-organic framework material preferably includes: heat treatment containing ZrCl 4 After mixed with organic ligands, it is dried and ground to obtain UiO-66 metal-organic framework materials.
[0030] In the present invention, the ZrCl 4 The mixed solution with the organic ligand is preferably obtained by ultrasonic stirring, specifically, under ultrasonic conditions, the ZrCl 4 The solution is mixed with organic ligands. In the present invention, the ultrasonic stirring time is preferably 30-50 min, more preferably 40-45 min; in the present invention, the ultrasonic stirring frequency is p...
Embodiment 1
[0052] 0.24g ZrCl 4 Place in 50mL DMF and ultrasonically stir for 15min, then add 0.161g terephthalic acid H 2 BDC continued to ultrasonically stir for 30 minutes to dissolve it completely;
[0053] Then pour the ultrasonically stirred mixture into a hydrothermal reaction kettle, seal it, put it into a constant temperature blast drying oven, and crystallize at a constant temperature of 120°C for 48 hours;
[0054] After cooling to room temperature, centrifuge, wash the obtained reactant with DMF and anhydrous methanol for 3 times, filter, and vacuum dry the product at 100°C overnight to obtain a white powder UiO-66;
[0055] The UiO-66 synthesized above was ground into a fine powder and placed in a high-temperature tube furnace. 2 Under the atmosphere, the temperature was raised to 900°C at a rate of 4°C / min, and calcined at a constant temperature for 3 hours to obtain ZrO 2 .
[0056] ZrO 2 The synthetic image of figure 1 shown.
[0057] For the prepared ZrO 2 Carry o...
Embodiment 2
[0061] 0.24g ZrCl 4 Place in 50mL DMF and stir ultrasonically for 15min, then add 0.181g H 2 BDC-NH 2 Continue to ultrasonically stir for 30 minutes until it is completely dissolved;
[0062] Then pour the ultrasonically stirred mixture into a hydrothermal reaction kettle, seal it, put it into a constant temperature blast drying oven, and crystallize at a constant temperature of 120°C for 48 hours;
[0063] After cooling to room temperature, centrifuge, wash the obtained reactant with DMF and anhydrous methanol for 4 times respectively, then filter, and vacuum dry the product at 100°C for 24h to obtain a light yellow powder as UiO-66-NH 2 Metal-organic framework materials;
[0064] The metal-organic framework materials synthesized above were ground into fine powders and placed in a high-temperature tube furnace. 2 Under the atmosphere, the temperature was raised to 900°C at a rate of 4°C / min, and calcined at a constant temperature for 3 hours to obtain ZrO 2 .
[0065] Z...
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