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Date Published: 30/06/2025
Abstract Views: 132
Issue
Vol. 22 No. 6 (2025)
Section
Natural Sciences and Technology
How to Cite
Nguyen, V. M., Pham Ngoc Minh, H., Dao Thi Khanh, L., Nguyen Minh, T., Luu Tuyet, V., & Nguyen Ngoc, H. (2025). MODIFICATION OF ORGANIC LIGAND IN A Zr-MOF MATERIAL BY HYDROXYL GROUPS FOR ENHANCING ADSORPTION ABILITY OF Cu2+ ION IN AQUEOUS MEDIUM. HCMUE Journal of Science, 22(6). https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/4867

MODIFICATION OF ORGANIC LIGAND IN A Zr-MOF MATERIAL BY HYDROXYL GROUPS FOR ENHANCING ADSORPTION ABILITY OF Cu2+ ION IN AQUEOUS MEDIUM

Nguyen van My , Hang Pham Ngoc Minh1, Linh Dao Thi Khanh2, Thai Nguyen Minh2, Vu Luu Tuyet2, Hung Nguyen Ngoc2
1 Trường Đại học Sư phạm Thành Phố Hồ Chí Minh
2 Trường Đại học Sư phạm Thành phố Hồ Chí Minh

Main Article Content

Abstract

In this study, HCMUE-2 material was successfully fabricated by combining the Zr4+ salt and hydroxyl-modified organic linker. Complete architectural characterizations of HCMUE-2 were confirmed through modern analysis procedures, including powder X-ray diffraction analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis measurement, and surface morphology analyses such as SEM and TEM incorporating with EDX spectrum. Accordingly, the maximum adsorption capacity of Cu2+ over HCMUE-2 is 1115.03 mg·g-1 at pH = 5.0, much higher than previously reported MOF materials. Notably, the obtained results of the Cu2+ removal are fitted with Langmuir isotherm and pseudo-second-order models, exhibiting that the Cu2+ adsorption onto HCMUE-2 is a chemical adsorption. Noteworthily, the structural robustness of HCMUE-2 is retained after adsorption, with the adsorption yield of Cu2+ (90%) without any considerable decrease after seven cycles. These findings indicate that HCMUE-2 is a potential material for eliminating the toxic Cu2+ ions from wastewater.

Keywords

Zr-MOFs, hydroxyl modification, Cu2 adsorption, Heavy metal ion, Wastewater treatment

Article Details

References

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