Synthesis, characterization and photocatalytic activity of 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
Author affiliations

Authors

  • Dang Nguyen Nha Khanh Hochiminh city Institute of Resources Geography, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi, District 1, Ho Chi Minh City, Viet Nam
  • Nguyen Thi Mai Tho Chemical Engineering Faculty, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Viet Nam
  • Nguyen Quoc Thang Chemical Engineering Faculty, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Viet Nam
  • Nguyen Thanh Tien Hochiminh city Institute of Resources Geography, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi, District 1, Ho Chi Minh City, Viet Nam
  • Chau Tan Phong Nong Lam University Ho Chi Minh City, Viet Nam
  • Mai Quynh Cang Nong Lam University Ho Chi Minh City, Viet Nam
  • Nguyen Thi Kim Phuong Hochiminh city Institute of Resources Geography, Vietnam Academy of Science and Technology, 01 Mac Dinh Chi, District 1, Ho Chi Minh City, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/57/5/13676

Keywords:

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

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.

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Published

08-10-2019

How to Cite

[1]
D. N. Nha Khanh, “Synthesis, characterization and photocatalytic activity of novel mixed metal oxides/reduced graphene oxide hybrid catalysts”, Vietnam J. Sci. Technol., vol. 57, no. 5, pp. 572–584, Oct. 2019.

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Section

Materials