Degradation of organic dyes by Peroxymonosulfate activated with Zn/Co-ZIF

Nguyen Trung Dung; Nguyen Phuong Thao; Hoang Thu Huong; Le Hai Dang; Nguyen Lan Thanh

doi:10.62239/jca.2024.052

Authors

Nguyen Trung Dung Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi, Vietnam Author
Nguyen Phuong Thao Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet St., Bac Tu Liem District, Hanoi, Vietnam Author
Hoang Thu Huong Faculty of chemistry, Hanoi National University of Education, 136 Xuan Thuy St., Cau Giay District, Hanoi, Vietnam Author
Le Hai Dang Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy St., Cau Giay District, Hanoi, Vietnam Author
Nguyen Lan Thanh Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam | Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam Author

DOI:

https://doi.org/10.62239/jca.2024.052

Keywords:

Zn/Co-ZIF, PMS, activation, MB, heterogeneous catalysts

Abstract

In this study, we successfully synthesized a bimetallic metal-organic framework material Zn/Co-ZIF to start Peroxymonosulfate (PMS) for organic dye degradation in the water body. Material characterization was evaluated by advanced methods, such as XRD, FT-IR, SEM, EDX, and BET. The influence of different factors on methylene blue (MB) decomposition rate was investigated. The results show that Zn/Co-ZIF has a porous structure, a high specific surface area and decomposes 98.22% MB (20 mg/L) in 4 minutes under reaction conditions of 40 mg/L catalyst, 0.814mM PMS, pH = 7. The decomposition efficiency of dyes increases in the order CR (79.85%) <RhB (90.81 %) < DB71 (96.07%) < MO (97.63%) < MB (98.22%). The main ROS for the degradation MB in this study were SO₄^-, O₂^- and ¹O₂. This shows that Zn/Co-ZIF materials are potential heterogeneous catalysts to activate PMS to decompose organic pollutants in water.

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