Bi-metalic ZIFs(Zn-M) (M: Co, Ni) for photocatalytic removal of organic pollutants in aqueous solutions
Vol. 132 No. 1B (2023), Original Article
Vol. 132 No. 1B (2023)

Bi-metalic ZIFs(Zn-M) (M: Co, Ni) for photocatalytic removal of organic pollutants in aqueous solutions

Original Article
https://doi.org/10.26459/hueunijns.v132i1B.6886
Published 2023-06-30
Hoang Phuc Nguyen
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Thanh Nhan Nguyen
Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Soo-Wohn Lee
Department of Environmental & Bio-Chemical Engineering, Sun Moon University, Asan, South Korea
Anh Son Pham
Department of Inorganic Chemistry, VNU University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam
Hoang Mai Ha*
Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Keywords

ZIF(Zn-Co)
bimetallic ZIF
photocatalytic removal
indigo carmine
organic pollutant

How to Cite

1.
Nguyen HP, Nguyen TN, Lee S-W, Pham AS, Hoang MH. Bi-metalic ZIFs(Zn-M) (M: Co, Ni) for photocatalytic removal of organic pollutants in aqueous solutions. hueuni-jns [Internet]. 2023Jun.30 [cited 2024Nov.27];132(1B):15-21. Available from: http://222.255.146.83/index.php/hujos-ns/article/view/6886
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Abstract

In this study, we successfully synthesised bi-metallic ZIF(Zn-M) of 2-methyl imidazole with a second metal (cobalt or nickel) binding to the ZIF network. All ZIF samples were synthesised at room temperature and characterised by using XRD, FT-IR, SEM, DRS, and nitrogen adsorption and desorption isotherms. The materials have high crystallinity with a large surface area. The materials’ photocatalytic ability was examined via the degradation of indigo carmine under a sun-light simulator. The second metal enhanced the photon harvesting ability of ZIF(Zn) because the materials can absorb photons in both UV and visible regions. Of the two catalysts, ZIF(Zn-Co) exhibited high photocatalytic ability when it removed 100% of indigo carmine from an aqueous solution. The catalyst adsorbed 45% of indigo carmine after 2 h and entirely degraded the remaining dye dring 1.5 h of solar irradiation. While Co2+ increased the catalyst’s surface area, Ni2+ reduced it, leading to lower photocatalytic efficiency.

https://doi.org/10.26459/hueunijns.v132i1B.6886
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