YANGChun,CHENXiao-hong,WANGHan,et al.Bimetal Doping of UiO-66 and Its Characteristics for Tetracycline Adsorption[J].China Water & Wastewater,2023,39(21):78-85.
Bimetal Doping of UiO-66 and Its Characteristics for Tetracycline Adsorption
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第21期
Page:
78-85
Column:
Date of publication:
2023-11-01
- Keywords:
- metal organic framework; UiO-66; metal doping; tetracycline; adsorption; material modification
- Abstract:
- Zirconium-based organic framework UiO-66 is an adsorbent with high efficiency. To further improve its adsorption performance, two metal ions cerium (Ce) and manganese (Mn) were doped into UiO-66 by solvothermal method to prepare the modified material CMN-UiO. The performance and tetracycline adsorption characteristics of the modified material were investigated. The synthesized CMN-UiO had good recycling performance. The specific surface area was 1 056.43 m2/g, and the average pore size was 1.35 nm. Compared with unmodified UiO-66, CMN-UiO exhibited higher tetracycline adsorption efficiency. The maximum adsorption capacity was 234.13 mg/g, the adsorption reached equilibrium in 40 min, and the adsorption process followed the Langmuir model and pseudo-second-order kinetic model. When the pH was 9.0, CMN-UiO had the maximum tetracycline adsorption capacity. The adsorption mechanisms mainly consisted of electrostatic interaction, hydrogen bonding, acid-base interaction and π-π interaction.
Last Update:
2023-11-01