期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 177, 期 -, 页码 190-197出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2016.04.017
关键词
Electrospinning; Uranium (VI) adsorption; Porous alumina; Kinetics; Thermodynamic
资金
- Special Innovation Talents of Harbin Science and Technology [2011RFQXG016, 2012RFXXG104]
- Fundamental Research Funds of the Central University [HEUCFZ1413]
- Key Program of the Natural Science Foundation of Heilongjiang Province [ZD201219]
- Program of International S&T Cooperation special project [2015DFR50050]
- Department of Education of Jilin province 12th Five Year science and technology research projects [[2014]451]
- Scientific research fund of Jilin provincial education department
- Scientific research fund of Jilin Vocational College of Industry and Technology
Porous Alumina (Al2O3) nanofibers were prepared by electrospinning process using pluronic P123 triblock copolymer surfactant as template. The characterizations of the adsorbent were investigated by Xray diffraction (XRD) fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption desorption. The obtained nanofibers were used as adsorbents for the removal of Uranium (VI). The maximum adsorption occurred at pH 5, the equilibrium adsorption amount was about 87 mg/g, and the equilibrium time was 6.0 h. A pseudo-second order model could best describe adsorption kinetics. The adsorption equilibrium data fit Freundlich adsorption isotherm equation well. Thermodynamic parameters such as standard enthalpy (Delta H-0), standard entropy (Delta S-0), standard free energy (Delta G(0)) and activation energy (E-a) were calculated. The results predict an endothermic nature of adsorption and a spontaneous process. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据