ZnO/C-g-C3N4 photocatalyst, preparation method thereof and triclosan wastewater treatment method

The invention discloses a ZnO/C-g-C3N4 photocatalyst, a preparation method of the ZnO/C-g-C3N4 photocatalyst and a triclosan wastewater treatment method. The photocatalyst is obtained by co-calcination of C-g-C3N4 and oxysalt of zinc. The calcining temperature is 250-650 DEG C; the C-g-C3N4 is a composite material of carbon and graphite phase carbon nitride. According to the invention, the ZnO/C-g-C3N4 composite photocatalyst is used to cooperate with a percarbonate activation system under the irradiation of visible light to efficiently degrade TCS. According to the composite photocatalyst, the visible light responsiveness of g-C3N4, the large forbidden bandwidth of ZnO and the conductivity and adsorbability of a carbon material are combined to construct a novel catalytic material, and the novel catalytic material is used for photocatalytic degradation of TCS. On the basis, percarbonate is added, a large number of hydroxyl free radicals are efficiently generated, and excellent TCS dechlorination and oxygenoly