Abstract
New lanthanide metal-organic framework(MOF) nano/microrods, [C4mim]Cl-Eu-MOF, [C8mim]Cl-Eu- MOF and [C12mim]Cl-Eu-MOF, were conveniently synthesized via an ionic liquid-assisted hydrothermal method and characterized by means of powder X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR), thermogravimetric analysis(TG) and transmission electron microscopy(TEM). The obtained nano/microrods with low surface areas were efficient for the removal of Congo red(CR) from aqueous solutions. Under the optimum conditions, [C4mim]Cl-Eu-MOF with a specific surface area of 5.1 m2/g exhibited an ultrahigh adsorption capacity of 2606 mg/g toward CR. Notably, the adsorption efficiency of [C4mim]Cl-Eu-MOF for CR via nano/microscale stacking can be directly demonstrated by TEM. In-depth understanding of CR removal by [C4mim]Cl-Eu-MOF nano/microrods was also supported by FTIR, Raman spectroscopy and zeta potential analyses.
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Supported by the National Natural Science Foundation of China(No.21475042), the Scientific Research Fund of Hunan Provincial Education Department, China(No.12B077), the Open Fund Project of State Key Laboratory of Chemo/Biosensing and Chemometrics in Hunan University, China(No.201103) and the Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province, China.
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Xiao, Y., Chen, F., Zhu, X. et al. Ionic liquid-assisted formation of lanthanide metal-organic framework nano/microrods for superefficient removal of Congo red. Chem. Res. Chin. Univ. 31, 899–903 (2015). https://doi.org/10.1007/s40242-015-5237-5
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DOI: https://doi.org/10.1007/s40242-015-5237-5