Objective In order to improve the photocatalytic degradation ability of graphite phase carbon nitride.Methods Dicyandiamide was modified with isophthalic acid withthe hydrothermal method,and the effect of differ-ent dosage of isophthalic acid on degradation performance was studied.Results The photocatalytic efficiency of carbon nitride modified by isophnic acid was significantly improved compared with that of pure carbon nitride,and its degradation rate constant was 0.0736min-1,which was 1.68 times that of carbon nitride.The addition of isophanic acid wasableto form an interaction with dicandiamide,which inhibited and promoted the growth of some crystal faces,increasing the tri-S-triazine ring structure during calcination,whichmade the modified graphite phase carbon nitride structure looser,increased the layer spacing and inserted more carbon into the lamellae.Therefore,the transient photocurrent of the modified graphite phase carbon nitride was larger and the electron transfer was faster,improving the photocatalytic performance.Conclusion The results provide another way to en-hance photocatalytic degradation of pollutants.
维普
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