Liu Rui, Frost Ray L, Martens Wayde N, Yuan Yong
Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia.
J Colloid Interface Sci. 2008 Nov 15;327(2):287-94. doi: 10.1016/j.jcis.2008.08.049. Epub 2008 Sep 3.
Organoclays were synthesized by the ion exchange of cationic surfactants containing single, double and triple alkyl chains for sodium ions in an aqueous suspension of Wyoming Na-montmorillonite. The characterization of organoclays with and without adsorbed phenol was determined by X-ray diffraction, TEM and thermal analysis. Differences in the surfaces and in the interlayer of the mono, di and tri alkyl chain organoclays resulted in differences in the adsorption efficiency for phenol with tri > di > mono >> Na-Mt. The results prove that organoclays can be effective for the removal of phenol from an aqueous solution and this removal is a function of the surfactant molecule and its concentration. In general, the higher the concentration as measured by the CEC value and the greater the number of alkyl chains in the surfactant molecule, the greater the percentage of the phenol that is removed.
通过在怀俄明钠蒙脱石的水悬浮液中，用含单、双和三烷基链的阳离子表面活性剂与钠离子进行离子交换来合成有机粘土。通过X射线衍射、透射电子显微镜和热分析来确定吸附和未吸附苯酚的有机粘土的特性。单、二和三烷基链有机粘土的表面和层间差异导致了对苯酚的吸附效率不同，顺序为三烷基链 > 二烷基链 > 单烷基链 >> 钠蒙脱石。结果证明，有机粘土可有效去除水溶液中的苯酚，且这种去除是表面活性剂分子及其浓度的函数。一般来说，以阳离子交换容量（CEC）值衡量的浓度越高，表面活性剂分子中的烷基链数量越多，苯酚的去除百分比就越大。
