A comparative study on the photodegradation of methyl orange, methylene blue using Fe2O3, Mn2O3, and Fe2O3 – Mn2O3 nanomaterials

Nguyen Vu Ngoc Mai; Le Bao Hung; Pham Ngoc Chuc; Duong Thi Lim; Dao Ngoc Nhiem; Nguyen Quang Bac; Tran Dai Lam

doi:10.51316/jca.2022.051

A comparative study on the photodegradation of methyl orange, methylene blue using Fe₂O₃, Mn₂O₃, and Fe₂O₃ – Mn₂O₃ nanomaterials

Authors

Nguyen Vu Ngoc Mai Faculty of Natural Science, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh 55000, Vietnam Author
Le Bao Hung Faculty of Natural Science, Quy Nhon University, 170 An Duong Vuong, Quy Nhon, Binh Dinh 55000, Vietnam | Vietnam-Russian Tropical Centre, 63 Nguyen Van Huyen, Cau Giay, Hanoi 10000, Vietnam Author
Pham Ngoc Chuc Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam Author
Duong Thi Lim Institute of Geography, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam Author
Dao Ngoc Nhiem Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam | Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam Author
Nguyen Quang Bac Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam | Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam Author
Tran Dai Lam Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2022.051

Keywords:

Nanoparticles, Fe2O3 – Mn2O3, photocatalyst Methyl Orange, Methyl Blue

Abstract

In this study, photocatalysis was applied to degrade methyl orange (MO) and methylene blue (MB) pollutants using nanoparticles (i.e., Fe₂O₃, Mn₂O₃, Fe₂O₃– Mn₂O₃). The results were shown that MB was relatively easier to decompose than MO. At the same initial concentration of 10 ppm, all nanomaterials need 120 min to degrade MB from 74.4%-96.5%, while after 180 min, MO is only degraded by 50%-95%. For both pollutants, the mixed nano-oxides of Fe₂O₃-Mn₂O₃ presented a superior treatment efficiency compared to the two single oxides (i.e., Fe₂O₃ and Mn₂O₃). The degradation efficiency was recorded with the order Fe₂O₃-Mn₂O₃> Fe₂O₃> Mn₂O₃. During photodecomposition, formed intermediates due to the incomplete reaction of pollutions and hydroxyl radical were investigated using the ions trap technique.

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Published

30-10-2022

Issue

Vol. 11 No. 3 (2022): October

Section

Full Articles

How to Cite

A comparative study on the photodegradation of methyl orange, methylene blue using Fe2O3, Mn2O3, and Fe2O3 – Mn2O3 nanomaterials. (2022). Vietnam Journal of Catalysis and Adsorption, 11(3), 59-63. https://doi.org/10.51316/jca.2022.051