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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of Macroporous Polymer Foams via Pickering High Internal Phase Emulsions for Highly Efficient 2,4,5-Trichlorophenol Removal
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Synthesis of Macroporous Polymer Foams via Pickering High Internal Phase Emulsions for Highly Efficient 2,4,5-Trichlorophenol Removal

机译：通过Pickering高内相乳液高效去除2,4,5-三氯苯酚的合成大孔聚合物泡沫

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摘要

Macroporous polymers foams (MPFs) were prepared by W/O Pickering high internal phase emulsions (HIPEs) stabilized by oleic acid (OA) modified silica nanoparticles (SPs), and then as-prepared MPFs were applied to highly efficient adsorption of 2,4,5-trichlorophenol (TCP). The characterization demonstrated that MPFs possessed macropore (50-150 mu m) and interconnected pores (0.5-2 mu m), and also had slightly hydrophobic nature (contact angle was 116 degrees) and excellent thermal stability especially bellow 200 degrees C. The influence of pH value, temperature, initial concentration, and contact time for the batch mode adsorption process was investigated, and the results showed that the maximum adsorption capacity and equilibrium time at 25 degrees C were 167.7 mg g(-1) and 30 min, respectively. Moreover, the experimental data indicate that equilibrium isotherms for TCP fitted to the non-linear Langmuir model, and both the adsorption and desorption kinetics can be represented by the pseudo-second-order model. The possible adsorption mechanism was considered to be the dispersion and hydrophobic interaction, simultaneously. The regeneration of the MPFs for one cycle was 94%. The results above strongly proved that this method reached the effect of highly efficient TCP removal. (C) 2014 Wiley Periodicals, Inc.
机译：通过W / O Pickering用油酸（OA）改性的二氧化硅纳米颗粒（SP）稳定的高内相乳液（HIPE）制备大孔聚合物泡沫（MPF），然后将制备的MPF用于高效吸附2,4 ，5-三氯苯酚（TCP）。表征表明，MPF具有大孔（50-150微米）和相互连通的孔（0.5-2微米），并且还具有略微的疏水性（接触角为116度）和极好的热稳定性，尤其是在200℃以下。对间歇式吸附过程的pH值，温度，初始浓度和接触时间进行了分析，结果表明，在25℃下的最大吸附容量和平衡时间分别为167.7 mg g（-1）和30 min。 。此外，实验数据表明，适合非线性Langmuir模型的TCP平衡等温线，吸附和解吸动力学都可以用拟二阶模型表示。可能的吸附机理被认为是同时发生的分散和疏水相互作用。一个周期的MPF再生率为94％。上述结果有力地证明了该方法达到了高效TCP删除的效果。 （C）2014威利期刊公司

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