Magnesium cyanamide complex, preparation method thereof and application as Fenton-like catalytic material
A compound and cyanamide technology, applied in physical/chemical process catalysts, nanotechnology for materials and surface science, chemical instruments and methods, etc., can solve the problem of narrow pH range, complex preparation process, metal ions and iron problems such as mud pollution, and achieve the effect of easy large-scale industrial production, simple preparation process and increased yield
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Embodiment 1
[0038] Accurately weigh 1 g of melamine and 0.5 g of basic magnesium carbonate and mix them uniformly in a mortar, then transfer the mixture to a 30 mL crucible with a lid, and wrap a layer of aluminum tin foil around the crucible. Finally, put the crucible into the muffle furnace, heat up to 550°C at a rate of 10°C / min, keep it warm for 2 hours, cool down to 80°C with the furnace, and take samples to obtain the magnesium cyanamide composite material.
[0039] figure 1 and figure 2 Respectively according to the XRD spectrum and the scanning electron microscope picture of the sample prepared according to the preferred embodiment 1 of the present invention, such as figure 1 As shown, by comparing the XRD standard PDF card, it can be known that the Fenton-like catalyzed MgCN 2 Complexes with MgO. Such as figure 2 As shown, the microstructure of the sample obtained is particles with a particle size of 20nm-80nm, and fine particles can ensure that the composite material has a...
Embodiment 2
[0043] Accurately weigh 1 g of melamine and 0.25 g of basic magnesium carbonate and mix them uniformly in a mortar, then transfer the mixture to a 30 mL crucible with a lid, and wrap a layer of aluminum foil paper around the crucible. Finally, put the crucible into the muffle furnace, raise the temperature to 550°C at a rate of 10°C / min, keep it for 1 hour, cool down to 80°C with the furnace, and take a sample to obtain the magnesium cyanamide composite. Figure 4 It is the XRD spectrum of the sample prepared according to the embodiment of the present invention 2, as can be seen from the figure, the product is g-C 3 N 4 、MgCN 2 Complexes with MgO.
[0044] The methylene blue degradation test was carried out on the composite material prepared in Example 2: Accurately weigh 20mg of the composite and add it to 100mL, 10mg / L methylene blue solution, then add 0.3mL of 30% hydrogen peroxide, and the whole reaction process is under magnetic stirring next. At different time interv...
Embodiment 3
[0046] Accurately weigh 0.25g of melamine and 1g of basic magnesium carbonate and mix them uniformly in a mortar, then transfer the mixture to a 30mL crucible with a lid, and wrap a layer of aluminum foil paper around the crucible. Finally, put the crucible into a muffle furnace, heat up to 550°C at a rate of 10°C / min, keep it warm for 3 hours, cool down to 80°C with the furnace, and take samples to obtain the magnesium cyanamide composite.
[0047] The composite material prepared in Example 3 is degraded Rhodamine B test: Accurately weigh 50mg of the composite and add it to 100mL, 10mg / L Rhodamine B solution, then add 0.4mL of 30% hydrogen peroxide, the whole reaction The process is carried out under magnetic stirring. At different time intervals, 3 mL of the reaction solution was filtered through a 0.22 μm filter membrane and then measured by UV-vis. Experimental results such as Figure 5 As shown, it can be seen from the figure that 98.1% of rhodamine B can be degraded wi...
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