A cobalt-iron bimetallic catalytic material based on mof-74 and its preparation method and application
A technology of MOF-74 and catalytic materials, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem that the activation effect of persulfate is not as good as that of homogeneous systems, Pollution, ion overflow and other problems, to achieve the effect of simple preparation method, simple and easy-to-obtain raw materials, and green and mild reaction conditions
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Embodiment 1
[0027] (1) Co(NO 3 ) 2 .6H 2 O (125mg, 0.5mmol), FeCl 2 (570mg, 4.5mmol), DHTA (1000mg, 5.0mmol) were added to 200mL DMF / ethanol / H 2 In the solvent of O(10 / 1 / 1), put it into the polytetrafluoro reactor after stirring evenly;
[0028] (2) Put the PTFE reactor into an oven, take it out after reacting at 120°C for 24 hours, wash it with ethanol three times, and filter to obtain a MOF-74 (Co / Fe) metal organic framework with a cobalt-iron ratio of 1 / 9.
[0029] 2mM the MOF-74(Co / Fe) metal organic framework with 0.5mM K 2 S 2 o 8 Combined, sulfadiazine at a concentration of 1 mM can be completely degraded within 2 hours, and the removal rate of TOC is 80%.
Embodiment 2
[0031] (1) CoCl 2 .6H 2 O (1200mg, 5.0mmol), FeSO 4 .7H 2 O (1400mg, 5.0mmol), DHTA (400mg, 2.0mmol) were added to 200mL DMA / ethanol / H 2 In the solvent of O(10 / 2 / 1), put it into the polytetrafluoro reactor after stirring evenly;
[0032] (2) Put the PTFE reactor into the oven, take it out after reacting at 160°C for 12 hours, wash it with ethanol three times, and filter to obtain a MOF-74 (Co / Fe) metal organic framework with a cobalt-iron ratio of 1 / 1.
[0033] 2mM of the MOF-74(Co / Fe) metal-organic framework combined with 1mM Oxone can completely degrade Rhodamine B at a concentration of 2mM within 1 hour, and the removal rate of TOC is 76%.
Embodiment 3
[0035] (1) Co(COOCH 3 ) 2 .4H 2 O (2250mg, 9.0mmol), Fe (COOCH 3 ) 2 (173mg, 1.0mmol), DHTA (800mg, 4.0mmol) were added to 500mL DMF / ethanol / H 2 In the solvent of O(10 / 2 / 1), put it into the polytetrafluoro reactor after stirring evenly;
[0036] (2) Put the PTFE reactor into an oven, take it out after reacting at 100°C for 72 hours, wash it with ethanol three times and filter to obtain a MOF-74(Co / Fe) metal-organic framework with a cobalt-iron ratio of 9 / 1.
[0037]2mM of the MOF-74(Co / Fe) metal-organic framework combined with 1mM Oxone can completely degrade the bisphenol A with a concentration of 1mM within 2 hours, and the removal rate of TOC is 82%.
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