Metal-organic framework materials and their preparation methods and applications
An organic framework and metal technology, applied in the field of materials, can solve the problems of rapid adsorption and insufficient removal capacity of high-concentration substances, and achieve the effects of large practical application value, good adsorption performance, and excellent pore structure.
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Embodiment 1
[0055] Example 1 Synthesis of Metal-Organic Framework Materials
[0056] Zr 6 O 4 (OH) 8 (H 2 O) 4 (BCPIA) 2 Synthesis
[0057] ZrCl 4 (48mg, 0.20mmol), H 4 BCIA (29 mg, 0.06 mmol) and formic acid (1-2 mL) were sonicated in 8 mL of DMF in a 20 mL Pyrex vial and sealed. The vial was then heated in an oven at 120°C for 72h-108h. After cooling to room temperature, the obtained yellow crystals were collected by filtration, washed with DMF and acetone, and then dried in air to obtain 28 mg of metal-organic framework material, which was designated as BUT-16.
[0058] Zr 6 O 4 (OH) 8 (H 2 O) 4 (BTB) 2 Synthesis
[0059] ZrCl 4 (0.20mmol), H 3 BTB (0.06 mmol) and formic acid (1-2 mL) were sonicated in 8 mL of DMF in a 20 mL Pyrex vial and sealed. The vial was then heated in an oven at 120°C for 72h-108h. After cooling to room temperature, the resulting yellow crystals were collected by filtration, washed with DMF and acetone, and then dried in air to ...
experiment example 1
[0060] Experimental Example 1 Structure of Metal-Organic Framework Materials
[0061] The structure of the metal-organic framework material prepared in Example 1 was characterized and calculated using a Rigaku model single crystal diffractometer instrument and the SCALE3 ABSPACk reduction method, and the results are listed in Table 1. The crystal structure of the metal-organic framework material was simulated by SHELXTL software.
[0062] The XRD pattern and structural simulation of the material are as follows figure 1 shown. The XRD patterns and nitrogen adsorption and desorption isotherms of the materials are as follows: figure 2 shown. The specific surface area adsorption value of the material reaches 2124m 2 g -1 .
[0063] Table 1 Crystallographic data of metal-organic framework material BUT-16
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[0065]
[0066] a R 1 =Σ(||F 0 |-|F C ||) / Σ|F 0 |; b wR 2 =[Σw(|F 0 | 2 -|F C | 2 ) 2 / Σw(F 0 2 )] 1 / 2 .
[0067] The crystallographic s...
experiment example 2
[0068] Experimental Example 2 Adsorption performance of metal-organic framework materials for bisphenol compounds
[0069] Taking the BUT-16 prepared in Example 1 as a typical example, its adsorption performance on bisphenol compounds was investigated.
[0070] Determination of the concentration before and after adsorption by liquid chromatography-mass spectrometry, the specific steps include:
[0071] (a) prepare a mixed standard solution of bisphenols, and measure its concentration by LC-MS;
[0072] (b) adding BUT-16 to the mixed standard solution of bisphenols, and vortexing at 100 rpm to 300 rpm for 10 min to 60 min;
[0073] (c) Add the mixed standard solutions of bisphenols with different concentrations to a fixed amount of BUT-16, measure the concentration of the mixed standard solutions of bisphenols after adsorption, and draw the adsorption isotherm.
[0074] Depend on image 3 From the adsorption isotherms of bisphenols shown, the saturated adsorption capacities ...
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