Preparation and characterization of nano-magnetic cellulose with fast kinetic properties towards the adsorption of some metal ions
Preparation and characterization of nano-magnetic cellulose with fast kinetic properties towards the adsorption of some metal ions
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DOI：
10.1016/j.cej.2011.08.034
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发表时间：
2012-05-15
影响因子：
15.1
通讯作者：
Abouzayed, F. I.
中科院分区：
文献类型：
--
作者：
Donia, A. M.;Atia, A. A.;Abouzayed, F. I.
在Fe（II）/Fe（III）混合物存在下，通过沉淀纤维素获得纳米磁性纤维素杂化物。然后通过甲基丙烯酸甘氨酯和四亚乙基五胺的连续处理用氨基官能化得到的杂化材料。通过红外光谱、热重分析、透射电镜、X射线衍射和氮吸附比表面积等手段对功能化杂化纤维素进行了表征。所制备的材料对Hg（II）、Cu（II）和Ag（I）的吸附容量分别为2、1.5和1.2 mmol/g。该吸附剂对三种金属离子的吸附均表现出快速的放热动力学。负载后的吸附剂用酸化硫脲进行再生。(C)出版社：Elsevier B. V.
Nano-magnetic cellulose hybrid was obtained from precipitation of cellulose in presence of Fe(II)/Fe(III) mixture. The hybrid material obtained was then functionalized with amino group through successive treatment by glycidylmethacrylate and tetraethylenepentamine. The functionalized hybrid cellulose was investigated by means of FT-IR. TGA, TEM, XRD and nitrogen adsorption surface area measurements. The prepared material showed adsorption capacity of 2, 1.5 and 1.2 mmol/g for Hg(II), Cu(II) and Ag(I), respectively. The adsorbent showed fast kinetics with exothermic nature for the adsorption of the three studied metal ions. The regeneration of the loaded adsorbent was carried out by acidified thiourea. (C) 2012 Published by Elsevier B.V.