Abstract
Abstract Recently, metal-organic frameworks with high porosity have drawn extensive attention in environment remediation. Herein, a variety of porous metal-organic frameworks were synthesized, including MIL-53(Fe), NH2-MIL-53(Fe), NO2-MIL-53(Fe) and Br-MIL-53(Fe), to adsorb tetracycline (TCN) from aqueous solution. Results showed that the functionalized MIL-53(Fe) exhibited higher adsorption performance than the pristine MIL-53(Fe). Among MIL-53(Fe) series, Br-MIL-53(Fe) had the highest maximum adsorption capacity of 309.6 mg g−1. Effects of initial pH values, co-existed ions and humic acid on the adsorption performance of functionalized MIL-53(Fe) were investigated. The adsorption kinetics fitted well with pseudo-second order model and the adsorption isotherms matched Langmuir model, which suggested that the adsorption process was dominant by chemisorption and the adsorption surface was homogenous. Additionally, adsorption thermodynamics showed that the adsorption process of TCN on MIL-53(Fe) series were spontaneous and endothermic. More importantly, the functionalized MIL-53(Fe) demonstrated excellent recyclability and the detailed adsorption mechanism was discussed. Therefore, this work provided a strategy for fabrication of efficient MOFs-based adsorbent for antibiotic-containing wastewater treatment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
