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Updated: Feb 16, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Functionalized metal-organic frameworks for effective removal of rocephin in aqueous solutions
Xudong Zhao1, Yanan Wei1, Huifang Zhao1
1College of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030012, China.
Abstract:
The porous metal-organic frameworks, MIL-101, MIL-101-SO3H and MIL-101-NH2 were used for the removal of harmful drug (rocephin) from water via adsorption. The kinetics study suggests that the adsorption onto all the MOFs follows the pseudo-second-order model. The adsorption isotherms results suggest that the adsorption onto MIL-101 and MIL-101-NH2 fits well with Langmuir model and the maximum adsorption capacities are calculated to 204.08 mg g-1 and 277.78 mg g-1, respectively; while the adsorption onto MIL-101-SO3H cannot fit well with both Langmuir and Freundlich models and the maximum adsorption capacity in the experiment is 25 mg g-1. Furthermore, the effect of pH as well as the adsorption mechanism was analysed systematically. It was found that electrostatic interaction as well as hydrogen-bond interaction plays dominant roles in adsorption of rocephin, and MIL-101-NH2 with abundant amino groups can exhibit better adsorption capacity and removal percentage towards rocephin than MIL-101, MIL-101-SO3H, and some other common adsorbents. In addition, co-existed Zn(NO3)2 can induce a large improvement of rocephin adsorption performance of MIL-101-NH2. At last, MIL-101-NH2 demonstrates to be a renewable adsorbent. In conclusion, we suggest MIL-101-NH2 is a promising adsorbent for effective removal of rocephin in water.
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