Synthesis and characterization of Z-scheme heterostructure CoWO4/g-C3N4 as a visible-light photocatalyst for removal of organic pollutant

Pham Viet Hai; Dao Thi Ngoc Anh; Nguyen Minh Viet; Tran Thi Viet Ha; Do Van Dang; Hoang Thu Trang; Nguyen Minh Phuong

doi:10.51316/jca.2021.029

Synthesis and characterization of Z-scheme heterostructure CoWO4/g-C3N4 as a visible-light photocatalyst for removal of organic pollutant

Authors

Pham Viet Hai Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Dao Thi Ngoc Anh Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Nguyen Minh Viet Hanoi University of Science, Viet Nam National University Author
Tran Thi Viet Ha Vietnam Japan University - Vietnam National University, Hanoi Author
Do Van Dang Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Hoang Thu Trang Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Nguyen Minh Phuong Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2021.029

Keywords:

Z–scheme photocatalyst, g-C3N4, CoWO4, visible light

Abstract

In this study, direct Z–scheme heterostructure CoWO₄/g-C₃N₄ was synthesized by a facile hydrothermal method. The structural, morphological properties of the prepared samples were characterised by XRD, SEM, UV–Vis and PL measurements. The as-obtained heterostructure CoWO₄/g-C₃N₄ exhibited enhanced photocatalytic activities toward the degradation of Rhodamine B under visible light irradiation with 92% Rhodamine B removal after 80 minutes irritation, which exceeded pristine g-C₃N₄and CoWO₄. The enhanced photocatalytic performance ascribed to interfacial contact between g-C₃N₄and CoWO₄, thus further inhibiting the recombination of photogenerated electron/hole pairs. It is anticipated that the construction of Z–scheme heterostructure CoWO₄/g-C₃N₄ is an effective strategy to develop high-performance photocatalysts for the degradation of organic pollutants in water.

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Published

30-07-2021

Issue

Vol. 10 No. 2 (2021): July

Section

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How to Cite

Synthesis and characterization of Z-scheme heterostructure CoWO4/g-C3N4 as a visible-light photocatalyst for removal of organic pollutant . (2021). Vietnam Journal of Catalysis and Adsorption, 10(2), 59-63. https://doi.org/10.51316/jca.2021.029