| abstract |
The invention discloses a modified g-C 3 N 4 photocatalyst and a preparation method thereof. The surface of the modified g-C 3 N 4 of the present invention has functional groups such as -NH 2 , -NH- and phenolic hydroxyl groups, and has a higher enrichment ability for Cr(VI) in water, thereby improving the photocatalytic performance of the catalyst. The efficiency of reducing Cr(VI) in water. In the present invention, graphite phase g-C 3 N 4 is prepared by thermally decomposing melamine, then salicylaldehyde is covalently grafted onto the surface of g-C 3 N 4 , and finally modified g-C 3 N 4 is obtained through reduction. The preparation method of the invention has easy-to-obtain raw materials, low cost, mild reaction conditions and no pollution to the environment. |