Chitosan-cellulose composite materials: preparation, characterization and application for removal of microcystin.
Chitosan-cellulose composite materials: preparation, characterization and application for removal of microcystin.
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DOI：
10.1016/j.jhazmat.2013.02.046
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发表时间：
2013-05-15
影响因子：
13.6
通讯作者：
Franko, Mladen
中科院分区：
文献类型：
--
作者：
Tran, Chieu D.;Duri, Simon;Delneri, Ambra;Franko, Mladen
我们开发了一种简单的一步法，用纤维素（CEL）和壳聚糖（CS）制备生物相容性复合材料。使用离子液体（IL）[BMIm+Cl−]作为绿色溶剂溶解并制备[CEL+CS]复合材料。由于大部分 (>88%) 使用的 IL 通过蒸馏 [CEL+CS] 的水洗液来回收再利用，因此该方法是可回收的。使用 XRD、FTIR、NIR、13C CP-MAS-NMR 和 SEM 来监测溶解情况并表征复合材料。研究发现，该复合材料具有其组件的综合优点：卓越的机械强度（来自 CEL）和对微囊藻毒素-LR（一种由蓝藻产生的致命毒素（来自 CS））的出色吸附能力。具体来说，复合材料的机械强度随着 CEL 负载的增加而增加；例如，通过在 CS 中添加 80% 的 CEL，拉伸强度可提高 5 倍。吸附动力学结果证实，CS 的独特性质在复合材料中保持完整，即它不仅是微囊藻毒素的非常好的吸附剂，而且优于所有其他可用的吸附剂。例如，它可以吸附比报道的最佳吸附剂多 4 倍的微囊藻毒素。重要的是，吸附的微囊藻毒素可以定量解吸，使复合材料能够以相似的吸附效率重复使用。
We developed a simple and one-step method to prepare biocompatible composites from cellulose (CEL) and chitosan (CS). [BMIm+Cl−], an ionic liquid (IL), was used as a green solvent to dissolve and prepare the [CEL+CS] composites. Since majority (>88%) of IL used was recovered for reuse by distilling the aqueous washings of [CEL+CS], the method is recyclable. XRD, FTIR, NIR, 13C CP-MAS-NMR and SEM were used to monitor the dissolution and to characterize the composites. The composite was found to have combined advantages of their components: superior mechanical strength (from CEL) and excellent adsorption capability for microcystin-LR, a deadly toxin produced by cyanobacteria (from CS). Specifically, the mechanical strength of the composites increased with CEL loading; e.g., up to 5X increase in tensile strength was achieved by adding 80% of CEL into CS. Kinetic results of adsorption confirm that unique properties of CS remain intact in the composite, i.e., it is not only a very good adsorbent for microcystin but also is better than all other available adsorbents. For example, it can adsorb 4X times more microcystin than the best reported adsorbent. Importantly, the microcystin adsorbed can be quantitatively desorbed to enable the composite to be reused with similar adsorption efficiency.
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影响因子：
4.9
作者：
Dai, Tianhong;Tegos, George P.;Hamblin, Michael R.
通讯作者：
Hamblin, Michael R.
影响因子：
11.2
作者：
Da Roz, A. L.;Leite, F. L.;Carvalho, A. J. F.
通讯作者：
Carvalho, A. J. F.
DOI：
10.1021/je0600092
发表时间：
2006-07-13
期刊：
JOURNAL OF CHEMICAL AND ENGINEERING DATA
影响因子：
--
作者：
Frez, Clifford;Diebold, Gerald J.;Yu, Shaofang
通讯作者：
Yu, Shaofang
影响因子：
--
作者：
Cai, Jie;Liu, Yating;Zhang, Lina
通讯作者：
Zhang, Lina
影响因子：
7.4
作者：
Baptista, MS;Tran, CD;Gao, GH
通讯作者：
Gao, GH