VISIBLE-LIGHT DEGRADATION OF INDIGO CARMINE USING A NOVEL MIXED METAL OXIDES/REDUCED GRAPHENE OXIDE HYBRID CATALYSTS

Dang Nguyen Nha Khanh, Nguyen Thi Mai Tho, Nguyen Quoc Thang, Nguyen Thanh Tien, Chau Tan Phong, Mai Quynh Cang, Nguyen Thi Kim Phuong

Abstract


A novel ZnBi2O4/rGO hybrid catalysts had been synthesized by a simple precipitation method. The crystallinity, structural, and morphological features were studied by XRD, FE-SEM and UV-Vis diffused reflectance  techniques. The photocatalytic activity of ZnBi2O4/rGO catalysts were evaluated by degradation of Indigo Carmine dye under visible-light irradiation. The enhancement of photocatalytic properties of ZnBi2O4/rGO attributed to the synergistic effect between ZnBi2O4 and rGO, which effectively separation of the photogenerated electron-hole pairs in ZnBi2O4. Moreover, the obtained ZnBi2O4/rGO displayed high chemical stability after four consecutive experiments under visible light.

Keywords


ZnBi2O4/rGO hybrid; Indigo Carmine; visible-light photodegradation

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References


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DOI: https://doi.org/10.15625/2525-2518/57/5/13676 Display counter: Abstract : 64 views. PDF : 13 views.

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