TY - JOUR
T1 - Enhancement tetracycline adsorption by amino/nitro-functionalized MIL-126(Fe) adsorbent based on the ligand installation method
AU - Xu, Mengting
AU - Chen, Zeyu
AU - Ni, Yeyang
AU - Yang, Wanyong
AU - Xu, Xihua
AU - Liu, Qing
AU - Fei, Zhaoyang
AU - Cui, Mifen
AU - Qiao, Xu
N1 - Publisher Copyright:
© 2024 Elsevier Inc.
PY - 2024/10
Y1 - 2024/10
N2 - MIL-126(Fe) shows great potential for aqueous phase drug adsorption due to its permanent porosity and easy modification. Herein, we utilized the ligand installation method to introduce two ligands, 2-amino terephthalic acid (NH2-BDC) and 2-nitro terephthalic acid (NO2-BDC), into MIL-126(Fe) to prepare MIL-126(Fe)-NH2 and MIL-126(Fe)-NO2, respectively. Various analytical tools were used to confirm the successful installation of the 1, 4-phthalic acid (BDC) series of ligands, as well as the successful introduction of amino (-NH2) and nitro (-NO2) groups. The presence of both -NH2 and -NO2 groups improved the adsorption of TC by the adsorbent material, with -NH2 groups having a stronger influence on the enhancement. The experimental results indicated that MIL-126(Fe)-NH2 had the highest adsorption performance at the optimal pH of 7, achieving a static adsorption capacity of 326.5 mg/g, which was about twice the adsorption capacity of the original MIL-126(Fe). X-ray photoelectron spectroscopy (XPS) determined that the adsorption of TC by MIL-126(Fe)-NH2 relies mainly on π-π interaction and Fe-N coordination bonds. Furthermore, the higher adsorption capacity of MIL-126(Fe)-NH2 can be attributed to the O-H⋯N hydrogen bonds interaction between -NH2 and the phenolic hydroxyl group (Ph-OH) in the TC molecule.
AB - MIL-126(Fe) shows great potential for aqueous phase drug adsorption due to its permanent porosity and easy modification. Herein, we utilized the ligand installation method to introduce two ligands, 2-amino terephthalic acid (NH2-BDC) and 2-nitro terephthalic acid (NO2-BDC), into MIL-126(Fe) to prepare MIL-126(Fe)-NH2 and MIL-126(Fe)-NO2, respectively. Various analytical tools were used to confirm the successful installation of the 1, 4-phthalic acid (BDC) series of ligands, as well as the successful introduction of amino (-NH2) and nitro (-NO2) groups. The presence of both -NH2 and -NO2 groups improved the adsorption of TC by the adsorbent material, with -NH2 groups having a stronger influence on the enhancement. The experimental results indicated that MIL-126(Fe)-NH2 had the highest adsorption performance at the optimal pH of 7, achieving a static adsorption capacity of 326.5 mg/g, which was about twice the adsorption capacity of the original MIL-126(Fe). X-ray photoelectron spectroscopy (XPS) determined that the adsorption of TC by MIL-126(Fe)-NH2 relies mainly on π-π interaction and Fe-N coordination bonds. Furthermore, the higher adsorption capacity of MIL-126(Fe)-NH2 can be attributed to the O-H⋯N hydrogen bonds interaction between -NH2 and the phenolic hydroxyl group (Ph-OH) in the TC molecule.
KW - Iron based metal-organic frameworks
KW - Ligand installation
KW - MIL-126(Fe)
KW - Nitrogenous organic ligand
KW - Tetracycline adsorption
UR - http://www.scopus.com/inward/record.url?scp=85197429098&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2024.113228
DO - 10.1016/j.micromeso.2024.113228
M3 - 文章
AN - SCOPUS:85197429098
SN - 1387-1811
VL - 378
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
M1 - 113228
ER -