Electrospinning synthesis of porous Al2O3 nanofibers by pluronic P123 triblock copolymer surfactant and properties of uranium (VI)-sorption

被引：38
作者：
Ren, Bo [1 ,2 ,4 ]
Fan, Meiqing [1 ,2 ]
Tan, Lichao [1 ]
Li, Rumin [1 ]
Song, Dalei [1 ]
Liu, Qi [1 ]
Wang, Jun [1 ,3 ]
Zhang, Bin [4 ]
Jing, Xiaoyan [1 ]
机构：
[1] Minist Educ, Key Lab Supertight Mat & Surface Technol, Harbin 150001, Peoples R China
[2] Jilin Vocat Coll Ind & Technol, Dept Appl Chem Engn, Jilin 132013, Jilin, Peoples R China
[3] Harbin Engn Univ, Inst Adv Marine Mat, Harbin 150001, Peoples R China
[4] Heilongjiang Acad Sci, Inst Petrochem, Harbin 150001, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 177卷
关键词：
Electrospinning; Uranium (VI) adsorption; Porous alumina; Kinetics; Thermodynamic; AQUEOUS-SOLUTIONS; FT-IR; ADSORPTION; REMOVAL; ALPHA-AL2O3; SORPTION; COMPLEXATION; MECHANISMS; EFFICIENT; PB(II);
D O I：
10.1016/j.matchemphys.2016.04.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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收藏
页码：190 / 197
页数：8
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