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Synthesis of Emulsion-Templated Magnetic Porous Hydrogel Beads and Their Application for Catalyst of Fenton Reaction
Langmuir ( IF 3.7 ) Pub Date : 2018-03-12 00:00:00 , DOI: 10.1021/acs.langmuir.8b00009 Shengmiao Zhang 1 , Xiaoxing Fan 1 , Fangning Zhang 1 , Yun Zhu 1 , Jianding Chen 1
Langmuir ( IF 3.7 ) Pub Date : 2018-03-12 00:00:00 , DOI: 10.1021/acs.langmuir.8b00009 Shengmiao Zhang 1 , Xiaoxing Fan 1 , Fangning Zhang 1 , Yun Zhu 1 , Jianding Chen 1
Affiliation
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The pristine Fe3O4 nanoparticle (FeNP) is supposed to be a good catalyst of Fenton processes which have shown significant potential for water purification. Herein the magnetic macroporous hydrogel beads, having an open-cell structure, were synthesized by sedimentation polymerization of pristine FeNP stabilized oil-in-water high internal phase emulsions. The effects of the FeNP amount, internal phase fraction, and the costabilizer Tween85 concentration on the structure, such as interconnecting degree, void size, and its distribution of both the surface and inner of the beads, were investigated. With a methyl orange (MO) aqueous solution passing through a chromatography column that was filled with the FeNPs loaded hydrogel beads, the efficiency of these hydrogel beads as catalyst for Fenton reaction to decompose MO in water was tested. The MO was decomposed quickly at the first hour, followed by decomposed gradually in a further 5 h, and the decomposition rate of MO could be up to 99.6% at the end of the test. Moreover, MO decomposition rate remained over 98.2% in six batches which were run in the same beads filled column. The results showed that these FeNPs loaded porous hydrogel beads were reusable and highly efficient supporter for catalysis of Fenton reaction for decomposing organic pollutants in water.
中文翻译：
乳液模板磁性多孔水凝胶微珠的合成及其在芬顿反应中的应用
原始的Fe 3 O 4纳米颗粒（FeNP）被认为是Fenton工艺的良好催化剂，该工艺已显示出巨大的净水潜力。本文中，通过原始的FeNP稳定的水包油型高内相乳液的沉淀聚合合成了具有开孔结构的磁性大孔水凝胶珠。研究了FeNP量，内相分数和共稳定剂Tween85浓度对结构的影响，例如互连程度，空隙尺寸及其在珠子表面和内部的分布。在甲基橙（MO）水溶液通过装有FeNPs负载水凝胶珠的色谱柱中，测试了这些水凝胶珠作为Fenton反应在水中分解MO的催化剂的效率。MO在开始的第一个小时迅速分解，然后在5小时内逐渐分解，在测试结束时MO的分解率可高达99.6％。此外，在相同的珠粒填充柱中运行的六批样品中，MO分解率保持在98.2％以上。结果表明，这些负载FeNPs的多孔水凝胶珠是可重复使用的高效载体，可催化Fenton反应分解水中的有机污染物。
更新日期：2018-03-12
中文翻译：
乳液模板磁性多孔水凝胶微珠的合成及其在芬顿反应中的应用
原始的Fe 3 O 4纳米颗粒（FeNP）被认为是Fenton工艺的良好催化剂，该工艺已显示出巨大的净水潜力。本文中，通过原始的FeNP稳定的水包油型高内相乳液的沉淀聚合合成了具有开孔结构的磁性大孔水凝胶珠。研究了FeNP量，内相分数和共稳定剂Tween85浓度对结构的影响，例如互连程度，空隙尺寸及其在珠子表面和内部的分布。在甲基橙（MO）水溶液通过装有FeNPs负载水凝胶珠的色谱柱中，测试了这些水凝胶珠作为Fenton反应在水中分解MO的催化剂的效率。MO在开始的第一个小时迅速分解，然后在5小时内逐渐分解，在测试结束时MO的分解率可高达99.6％。此外，在相同的珠粒填充柱中运行的六批样品中，MO分解率保持在98.2％以上。结果表明，这些负载FeNPs的多孔水凝胶珠是可重复使用的高效载体，可催化Fenton反应分解水中的有机污染物。
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