Composite material for efficiently activating monopersulfate as well as preparation method and application of composite material
A technology of persulfate and composite materials, applied in the direction of chemical instruments and methods, applications, soil conditioning materials, etc., can solve the problems of high cost, complicated preparation steps, narrow applicable pH range, etc., achieve easy separation, recycling and reuse, overcome Secondary risks, effects of complex synthesis steps
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Embodiment 1
[0039] A kind of composite material and its application of high-efficiency activation monopersulfate are completed according to the following steps, the Co-C 3 N 5 It is composed of 3 amino-1,2,4 triazole and CoCl 2 ·6H 2 The raw materials such as O are prepared according to the following steps:
[0040] Step 1: Weigh 5g of 3-amino-1,2,4-triazole into a crucible, put it into a tube furnace and calcinate it under a set temperature rise program. The heating program is as follows: set the initial temperature at 25°C, raise the temperature to 500°C at a rate of 5°C / min, and keep it for 180 minutes, then cool down naturally to obtain a solid.
[0041] Step 2: Put the solid obtained in Step 1 into a mortar and grind it evenly, then wash and centrifuge with ultrapure water until the washing liquid is neutral, then put it into a freeze dryer for 12 hours to make it completely dry, and obtain the target solid C 3 N 5 .
[0042] Step 3: Weigh 0.5g of C obtained in Step 2 3 N 5 P...
Embodiment 2
[0047] In this example, using Co-C 3 N 5 The method for activating monopersulfate to treat organic waste water containing polychlorinated biphenyls 28, the specific steps are as follows:
[0048] Step 1: Co-C prepared in Example 1 3 N 5 Added to waste water containing organic pollutants to obtain a mixed solution;
[0049] Step 2: adding monopersulfate to the mixed solution obtained in step 1 to obtain a mixed solution containing a catalyst and an oxidizing agent;
[0050] Step 3: Physically mix and react the mixed solution obtained in Step 2 for 5-30 minutes;
[0051] Step 4: separating and detecting the solution obtained in step 3;
[0052] This embodiment adopts Co-C 3 N 5 Co(I) on the surface can quickly transfer electrons to activate monopersulfate to generate hydroxyl radicals on the mineral surface, thereby achieving the purpose of rapidly degrading target pollutants. The implementation results are shown in figure 2 , this embodiment is based on Co-C 3 N 5 Ac...
Embodiment 3
[0054] This embodiment is similar to the steps of embodiment 2, the only difference is: in the step 1, Co-C 3 N 5 The dosage is different. In this example, the Co-C 3 N 5 When the dosage is 0.1g / L, 0.2g / L, 0.5g / L and 1.0g / L, the treatment effect on the waste water containing 0.5ppm PCB 28 is the same as that in Example 2. The result is as image 3 As shown, it can be seen that Co-C 3 N 5 When the dosage is 0.2g / L, the treatment effect on PCB 28 is the best, because the excess Co-C 3 N 5 It will quench free radicals and inhibit the degradation of pollutants.
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