Magnesium cyanamide complex, preparation method therefor and application of magnesium cyanamide complex as Fenton-like catalytic material
A composite, magnesium cyanamide technology, applied in physical/chemical process catalysts, nanotechnology for materials and surface science, chemical instruments and methods, etc., can solve metal ion and iron sludge pollution, complex preparation process, pH Narrow scope of application and other issues, to achieve the effect of increased yield, simple preparation process, and easy large-scale industrial production
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Embodiment 1
[0038] Accurately weigh 1 g of melamine and 0.5 g of basic magnesium carbonate and mix them evenly in a mortar, then transfer the mixture to a crucible with a capacity of 30 mL, and wrap a layer of aluminum foil in the crucible. Finally, the crucible is put into a muffle furnace, heated to 550°C at a rate of 10°C / min, kept for 2h, cooled to 80°C with the furnace, and sampled to obtain the magnesium cyanamide composite material.
[0039] figure 1 versus figure 2 These are the XRD patterns and scanning electron microscope pictures of the samples 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 catalytic MgCN 2 Complex with MgO. Such as figure 2 As shown, the obtained sample microstructure is particles with a particle size of 20 nm to 80 nm, and the small particles can ensure that the composite material has a larger specific surface area and more active ...
Embodiment 2
[0043] Accurately weigh 1g of melamine and 0.25g of basic magnesium carbonate and mix them evenly in a mortar, then transfer the mixture to a 30mL crucible with a lid, and wrap a layer of aluminum foil in the crucible. Finally, the crucible is put into the muffle furnace, heated to 550°C at a rate of 10°C / min, kept for 1h, cooled to 80°C with the furnace, and sampled to obtain the magnesium cyanamide composite. Figure 4 It is the XRD pattern of the sample prepared in Example 2 of the present invention. From the figure, it can be seen that the product is g-C 3 N 4 , MgCN 2 Complex with MgO.
[0044] The composite material prepared in Example 2 was subjected to the methylene blue degradation test: accurately weigh 20 mg of the composite and add it to 100 mL, 10 mg / L methylene blue solution, and then add 0.3 mL of 30% hydrogen peroxide. The entire reaction process was magnetically stirred Proceed under. At different time intervals, 3 mL of the reaction solution was filtered through...
Embodiment 3
[0046] Accurately weigh 0.25 g of melamine and 1 g of basic magnesium carbonate and mix them evenly in a mortar, then transfer the mixture to a crucible with a capacity of 30 mL, and wrap a layer of aluminum foil in the crucible. Finally, the crucible is put into a muffle furnace, heated to 550°C at a rate of 10°C / min, kept for 3h, cooled to 80°C with the furnace, and sampled to obtain the magnesium cyanamide compound.
[0047] The composite material prepared in Example 3 was tested for degradation of rhodamine B: accurately weigh 50 mg of the composite and add it to 100 mL, 10 mg / L rhodamine B solution, and then add 0.4 mL 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 subjected to spectrum measurement with UV-vis. The experimental results are as Figure 5 As shown, the figure shows that 98.1% of rhodamine B can be ...
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