| abstract |
The invention relates to the technical field of advanced oxidation treatment of wastewater, in particular to a preparation method of a catalyst for hydrogen peroxide heterogeneous catalytic oxidation of COD in wastewater, which comprises the steps of dissolving Zn salt and Fe (acac)3 in methanol, dissolving 2-methylimidazole in methanol, uniformly mixing the two, then putting the two into a stainless steel reaction kettle, obtaining a product of Fe (acac)3 in-situ coated in a ZIF-8 cage through solvothermal reaction, marking as Fe (acac)3@ ZIF-8, carbonizing the product at high temperature under inert gas, and cooling to obtain an Fe-ZIF-8(NPC) sample. The invention has the beneficial effects that: the organic matters in the wastewater are catalytically oxidized into carbon dioxide and water, so that the utilization rate of Fe is maximized, the catalytic activity is obviously improved, and the removal rate of COD is obviously improved. |