Preparation of a composite material for the uptake of bisphenol A from aqueous solutions, the dodecylsulfate ion-intercalated MgAl layer-structured double hydroxide particles
Preparation of a composite material for the uptake of bisphenol A from aqueous solutions, the dodecylsulfate ion-intercalated MgAl layer-structured double hydroxide particles
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DOI：
10.1016/j.jallcom.2005.03.085
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发表时间：
2005-10
影响因子：
6.2
通讯作者：
T. Kameda;M. Saito;Y. Umetsu
中科院分区：
文献类型：
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作者：
T. Kameda;M. Saito;Y. Umetsu
通过用十二烷基硫酸根离子（DS-）修饰层间层，尝试制备具有有机酸功能的MgAl层状结构双氢氧化物（MgAl LDH）颗粒。通过将Mg（NO3）2和Al（NO3）3的溶液滴加到pH恒定为10.0的十二烷基硫酸钠水溶液中来合成在层间具有DS-插入的MgAl LDH。发现DS−改性的MgAl LDH颗粒具有对水溶液中的双酚A的吸收能力。这表明DS-作为有机材料的功能在MgAl LDH的层间中得到了充分的保持。随着层间DS-含量的增加，吸附量增加。证实DS-插层MgAl LDH吸收的双酚A是用乙醇提取的。用乙醇处理的DS-插层MgAl LDH具有与新鲜LDH相当的双酚A摄取能力。这些结果表明，DS−-插层MgAl LDH在双酚A的吸收和乙醇萃取的重复循环过程中保持其活性。
The preparation of MgAl layer-structured double hydroxide (MgAl LDH) particles equipped with the function of an organic acid has been attempted by modifying the interlayer with dodecylsulfate ion (DS−). MgAl LDH, which had DS−intercalated in the interlayer, was synthesized by the dropwise addition of a solution of Mg(NO3)2and Al(NO3)3to an aqueous solution of sodium dodecylsulfate at a constant pH of 10.0. The DS−-modified MgAl LDH particle was found to have an uptake capacity for bisphenol A in an aqueous solution. This indicates that the function of DS−as an organic material was adequately maintained in the interlayer of the MgAl LDH. The uptake capacity increased with the increasing content of DS−intercalated in the interlayer. The bisphenol A uptaken by the DS−-intercalated MgAl LDH was confirmed to be extracted with ethanol. The DS−-intercalated MgAl LDH treated by the ethanol had a bisphenol A uptake capacity comparable to that of fresh LDH. These results indicate that DS−-intercalated MgAl LDH retains its activity during repeated cycles of the uptake and ethanol extraction of bisphenol A.