文献类型：期刊文献

英文题名：Synthesis of Emulsion-Templated Magnetic Porous Hydrogel Beads and Their Application for Catalyst of Fenton Reaction

作者：Zhang, Shengmiao[1];Fan, Xiaoxing[1];Zhang, Fangning[1];Zhu, Yun[1];Chen, Jianding[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：34

期号：12

起止页码：3669

外文期刊名：LANGMUIR

收录：;EI(收录号：20181404975974);WOS:【SCI-EXPANDED(收录号:WOS:000428712400015)】；

基金：This work was supported by the Natural Science Foundation of Shanghai (16ZR1407800), the National Natural Science Fund of China (51773059), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Nanocatalysts - Water pollution - Oxidation - Hydrogels - Azo dyes - Reusability - Water treatment - Magnetite - Computer software reusability

摘要：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.