Synthesis of Magnetic Metal Organic Framework Fe3O4@NH2-MIL-53(Al) Materials and Application to the Adsorption of Lead
ZHAO Fang-biao2, SONG Nai-zhong1, NING Wei-kun2, JIA Qiong1*
1. College of Chemistry, Jilin University, Changchun 130012, China 2. College of Materials Science and Engineering, Jilin University, Changchun 130022, China
Abstract：Metal organic framework, a novel class of organic inorganic hybrid functional materials, has been widely used in the fields of gas adsorption, catalysis, separation, and biological medicine due to its large specific surface area, diverse structural, and adjustable channel. In this work, a new amine-functionalized magnetic metal-organic framework material was synthesized. Nano-Fe3O4 was prepared by a solvothermal method, after which polyvinyl pyrrolidone was employed to modify Fe3O4. Finally, amino groups were introduced to prepare Fe3O4@NH2-MIL-53(Al). The crystal structure and functional groups of the material were characterized by means of X-ray diffraction (XRD) and Fourier transform infrared spectrometry (FT-IR). Combined with flame atomic absorption spectroscopy (FAAS), the adsorption of lead by the magnetic adsorbent was investigated. The magnetic adsorbent possesses high adsorption capacity because of the large specific surface area of Fe3O4@NH2-MIL-53(Al) and the coordination between amino group and lead. Experimental conditions affecting the adsorption percentage were discussed and the experimental operation parameters were optimized (pH value of 6.0 and adsorption time of 120 min). Kinetics and thermodynamics studies were conducted for the adsorption process. Langmuir/Freundlich and pseudo-first-order/pseudo-second-order models were applied to analyze the experimental data. Thermodynamic functions, i. e., changes of Gibbs energy, entropy, and enthalpy, were calculated from temperature experiments. In addition, the regeneration of the adsorbent was considered with hydrochloric acid as the desorption solution. Several adsorption and desorption experiments were carried out, illustrating that the Fe3O4@NH2-MIL-53(Al) adsorbent can be used repeatedly.
赵方彪2，宋乃忠1，宁维坤2，贾 琼1* . 磁性金属有机骨架材料Fe3O4@NH2-MIL-53(Al)的制备及对铅的吸附研究 [J]. 光谱学与光谱分析, 2015, 35(09): 2439-2443.
ZHAO Fang-biao2, SONG Nai-zhong1, NING Wei-kun2, JIA Qiong1* . Synthesis of Magnetic Metal Organic Framework Fe3O4@NH2-MIL-53(Al) Materials and Application to the Adsorption of Lead . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(09): 2439-2443.
[1] Cui L, Wang Y, Hu L, et al. RSC Advances, 2015, 5: 9759. [2] Feng Y, Gong J L, Zeng G M, et al. Chemical Engineering Journal, 2010, 162: 487. [3] Zhang L, Wang X, Chen H, et al. Clean-Soil Air Water, 2014, 42: 947. [4] Zhu Y, Hu J, Wang J. Journal of Hazardous Materials, 2012, 221: 155. [5] Yang G, Tang L, Lei X, et al. Applied Surface Science, 2014, 292: 710. [6] Fan L, Luo C, Sun M, et al. Colloids and Surfaces B-Biointerfaces, 2013, 103: 523. [7] Ye J J, Liu S X, Tian M M, et al. Talanta, 2014, 118: 231. [8] Tian M M, Chen D X, Sun Y L, et al. RSC Advances, 2013, 3: 22111. [9] Beyki M H, Shemirani F. RSC Advances, 2015, 5: 22224. [10] Wang S, Wang K, Dai C, et al. Chemical Engineering Journal, 2015, 262: 897. [11] Sohrabi M R, Matbouie Z, Asgharinezhad A A, et al. Microchimica Acta, 2013, 180: 589. [12] Taghizadeh M, Asgharinezhad A A, Pooladi M, et al. Microchimica Acta, 2013, 180: 1073. [13] Zhang T, Zhang X, Yan X, et al. Chemical Engineering Journal, 2013, 228: 398. [14] Deng H, Li X L, Peng Q, et al. Angewandte Chemie-International Edition, 2005, 44: 2782. [15] Chen J, Liu R, Guo Y, et al. ACS Catalysis, 2015, 5: 722. [16] Wang J, Zheng S, Shao Y, et al. Journal of Colloid and Interface Science, 2010, 349: 293. [17] Lu G, Li S, Guo Z, et al. Nature Chemistry, 2012, 4: 310. [18] Qian X, Zhong Z, Yadian B, et al. International Journal of Hydrogen Energy, 2014, 39: 14496.
