Ionic Liquid-assisted Formation of Lanthanide Metal-organic Framework Nano/Microrods for Superefficient Removal of Congo Red

• Published in: Chemical research in Chinese universities Vol. 31; no. 6; pp. 899 - 903
• Main Authors: Xiao, Yi, Chen, Fang, Zhu, Xixi, Qin, Hongling, Huang, Hongmei, Zhang, Youyu, Yin, Dulin, He, Xiaoxiao, Wang, Kemin
• Format: Journal Article
• Language: English
• Published: Changchun Jilin University and The Editorial Department of Chemical Research in Chinese Universities 01.12.2015; Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education,College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.R.China
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Inorganic Chemistry; Organic Chemistry; Physical Chemistry; 傅里叶变换红外光谱; 刚果红; 微米; 框架; 离子液体; 纳米; 透射电子显微镜; 金属有机; Lanthanide metal-organic framework; Congo red; Adsorption; Nano/microrod; Ionic liquid
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-015-5237-5

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）, thermo- gravimetric analysis（TG） and transmission electron microscopy（TEM）. The obtained nano/microrods with low sur- face 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 m^2/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.