Defective metal organic framework photocatalyst and preparation method thereof
A metal-organic framework, photocatalyst technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Toxic metal ions are easy to dissolve, and the environment has potential harm, etc., to achieve the effects of novel morphology and structure, good use value and application value, and large photocurrent
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Embodiment 1
[0032] A defect-type metal-organic framework photocatalyst, specifically a defect-type MIL-53 metal-organic framework photocatalyst, which uses ferric chloride hexahydrate and terephthalic acid as raw materials and N,N-dimethylformamide as a solvent , prepared by solvothermal reaction under the action of an acid regulator, comprising the following steps:
[0033] (1) Dissolve ferric chloride hexahydrate, terephthalic acid in N , N-dimethylformamide, mix well to form a bright yellow clear solution, which is the mixed solution A.
[0034] (2) Add 10 μL, 20 μL, 30 μL, 40 μL, 50 μL, and 100 μL of HCl solution (that is, the acid regulator, with a concentration of 1 mol / L) into 56 mL of the mixed solution A obtained in step (1), and mix well to obtain a mixed Solution B.
[0035] (3) Put the mixed solution B obtained in step (2) into a reaction kettle, and perform a solvothermal reaction at a temperature of 170°C for 24 hours, wash the obtained crystals with DMF and methanol three...
Embodiment 2
[0046]Investigate the photocatalysts of defective metal organic framework (D-1, D-2, D-3, D-4, D-5, D-10) and perfect MIL-53 metal organic framework photocatalyst (MIL-53) in The photocatalytic degradation efficiency of tetracycline under the visible light condition of wavelength λ>420nm, comprises the following steps:
[0047] Take the defective metal-organic framework photocatalyst (D-1, D-2, D-3, D-4, D-5, D-10) prepared in Example 1 and the perfect type prepared in Comparative Example 1 MIL-53 metal-organic framework photocatalyst (MIL-53), 50mg each, was added to 100mL tetracycline solution with a concentration of 20mg / L, ultrasonically uniform, and reacted for 60min in the absence of light (magnetic stirring), to achieve adsorption After desorption equilibrium, under the condition of visible light with wavelength λ > 420nm, illuminate for 150min, sample 3mL every 30min, measure the characteristic peak of tetracycline in the solution with a UV-visible spectrophotometer, c...
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