Adsorption of Rhodamine B and methyl orange on a hypercrosslinked polymeric adsorbent in aqueous solution
Adsorption of Rhodamine B and methyl orange on a hypercrosslinked polymeric adsorbent in aqueous solution
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DOI：
10.1016/j.colsurfa.2008.07.050
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发表时间：
2008-11-20
影响因子：
5.2
通讯作者：
Yan, Chen
中科院分区：
文献类型：
--
作者：
Huang, Jian-Han;Huang, Ke-Long;Yan, Chen
制备了一种甲醛羰基功能化的超高交联吸附树脂HJ-1，研究了其对两种染料的吸附性能。在水溶液中测试罗丹明B（RB）和甲基橙子（MO）。结果表明，半经验Freundlich吸附等温式能较好地描述吸附等温线，吸附动力学符合准二级动力学模型，膜扩散和粒内扩散均为速率限制步骤。吸附热力学参数表明，吸附是一个放热的、自发的、有序排列的过程，吸附剂的极性官能团和吸附剂孔径与吸附质分子大小的匹配是影响吸附的两个主要因素。(C)2008 Elsevier B. V.保留所有权利。
In the present study, a hypercrosslinked polymeric adsorbent functionalized with formaldehyde carbonyl groups, HJ-1 was prepared and its adsorption behaviors for two dyes. Rhodamine B (RB) and methyl orange (MO), were tested in aqueous solution. Batch adsorption results indicated that semi-empirical Freundlich isotherm described the adsorption isotherms better and kinetic studies demonstrated that the adsorption obeyed the pseudo-second-order rate model and both of film diffusion and intra-particle diffusion were the rate limiting steps. Adsorption thermodynamic parameters displayed that the adsorption was an exothermic, spontaneous, and more ordered arrangement process, and the polar functional groups of the adsorbent and the matching between the pore diameter of the adsorbent and the molecular size of the adsorbate are the two primary factors influencing the adsorption. (C) 2008 Elsevier B.V. All rights reserved.