期刊
JOURNAL OF POROUS MATERIALS
卷 23, 期 5, 页码 1363-1372出版社
SPRINGER
DOI: 10.1007/s10934-016-0195-y
关键词
Adsorption; Magnetic adsorbent; MIL-101; Chitosan; Methyl orange
资金
- National Natural Science Foundation of China (NSFC) [21371002]
- NSFC-CAS Joint Fund for Research Based on Large-Scale Scientific Facilities [10979014]
- NSF of Anhui Province
- Program for New Century Excellent Talent in University, Ministry of Education, China [NCET-08-0617]
- 211 Project of Anhui University
- Key projects of Anhui Provincial Department of Education [KJ2016A309]
A novel magnetic composite bioadsorbents composed of chitosan wrapping various content of nanoscale Fe3O4 and MIL-101 ([Cr3F(H2O)(2)O(bdc)(3)], bdc = 1,4 benzenedicarboxylate, m-CS/Fe3O4/MIL-101) were prepared for the adsorptive removal of a harmful anionicdye methyl orange (MO), from aqueous solutions. The introduction of chitosan could obviously increase the adsorption capacity of MO onto the metal-organic frameworks by about 40 % in comparison with pure MIL-101. The adsorption kinetics was investigated, and the experimental data and adsorption isotherms were better fitted by pseudo-second order kinetic model and Langmuir isotherm, respectively. Furthermore, the m-CS/Fe3O4/MIL-101 composites are reusable after adsorption in water and could be effectively separated by applying a magnetic field after adsorption.
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