| abstract |
The invention relates to a preparation method of a magnetic nanometer g-C 3 N 4 /MnFe 2 O 4 catalyst. The method of the invention comprises preparing g-C 3 N 4 , dissolving nitrates of Fe and Mn in deionized water in proportion to prepare a solution, adding organic fuel and inert salt NaCl, adjusting the pH of the mixed solution, and then dissolving g-C 3 N 4 is dispersed in the above-mentioned uniform solution, and finally the above-mentioned mixture is calcined, washed and dried to obtain a magnetic nano-g-C 3 N 4 /MnFe 2 O 4 catalyst. The g - C 3 N 4 /MnFe 2 O 4 nanomaterial of the present invention reduces the agglomeration between MnFe 2 O 4 particles and improves the Specific surface area, providing more active sites to improve catalytic activity. At the same time, since MnFe 2 O 4 is attached to the g‑C 3 N 4 nanosheets, the leaching of heavy metal ions from all directions is prevented, thereby reducing the leaching amount of Fe and Mn ions. In addition, the recycling performance of the catalyst is improved. |