Synthesis and characterization of selective thiourea modified Hg(II) ion-imprinted cellulosic cotton fibers

被引：73
|
作者：
Monier, M. [1 ]
Kenawy, I. M. [1 ]
Hashem, M. A. [1 ]
机构：
[1] Mansoura Univ, Fac Sci, Dept Chem, Mansoura, Egypt
来源：
CARBOHYDRATE POLYMERS | 2014年 / 106卷
关键词：
Cotton fibers; Cellulose; Thiourea; Ion-imprinting; FAST REMOVAL; OXIDATIVE MODIFICATIONS; PERIODATE SYSTEM; POLYMER; ADSORPTION; RESIN; PET; RECOGNITION; CU(II); CU2+;
D O I：
10.1016/j.carbpol.2014.01.074
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In the present study, Hg2+ ion-imprinted chelating fibers based on thiourea modified natural cellulosic cotton fibers (Hg-C-TU) were synthesized and characterized using some instrumental techniques such as elemental analysis, scanning electron microscopy (SEM), FTIR, wide angle X-ray and XPS spectroscopy. The modified lig-C-TU fibers were employed for selective removal of Hg2+ from aqueous solution. Effect of some essential parameters such as pH, temperature, adsorption times and adsorbate concentration were examined to evaluate the optimum adsorption condition. The adsorption kinetics followed the second-order kinetic model indicating that the chemical adsorption is the rate limiting step. Also, the adsorption isotherm experiments showed the best fit with Langmuir model with maximum adsorption capacities 110.3 and 61.8 mg/g for both Hg-C-TU and NI-C-TU, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：49 / 59
页数：11
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