Citation: Mengmeng SUN, Rui JIANG, Tianyi ZHAO, Jimin YANG. Fabrication of carboxyl-modified UiO-67 nanomaterials and their highly efficient removal mechanism of anionic dye[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(3): 499-506. doi: 10.11862/CJIC.20250281 shu

Fabrication of carboxyl-modified UiO-67 nanomaterials and their highly efficient removal mechanism of anionic dye

School of Chemistry & Chemical Engineering, Linyi University, Linyi, Shandong 276000, China

Corresponding author: Jimin YANG, yangjimin@lyu.edu.cn
Received Date: 8 September 2025
Revised Date: 16 January 2026

Figures(7)

The carboxyl-modified UiO-67 nanomaterials (UiO-67-COOH) were synthesized by the solvothermal method, in which 4, 4′-biphenyldicarboxylic acid and 1, 1′-biphenyl-3, 4′, 4-tricarboxylic acid, and ZrCl₄ were adopted as ligands and metal salt, respectively. The maximum adsorption capacities of carboxyl-modified UiO-67 were 698.7, 295.9, and 200.8 mg·g^-1 for Congo red (CR), methyl orange (MO), and acid orange 7 (AO7), respectively, indicating that they exhibit superior dye removal performance. The removal efficiency of UiO-67-COOH toward CR, MO, and AO7 decreased with the electrostatic interaction, π-π interactions, adsorption space, and steric hindrance effect.
- metal-organic frameworks,
- organic dyes,
- sorption property,
- group modification
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