Prussian blue decorated hydrogel particles for effective removal of cesium ion from aqueous media
Prussian blue decorated hydrogel particles for effective removal of cesium ion from aqueous media
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DOI：
10.1016/j.polymer.2019.122029
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发表时间：
2020-01-09
期刊：
影响因子：
4.6
通讯作者：
Lee, Kyung Jin
中科院分区：
文献类型：
--
作者：
Moon, Seongjun;Jang, Sun Woo;Lee, Kyung Jin
通过物理交联聚乙烯醇和原位普鲁士蓝（PB）修饰制备了PB修饰的磁性水凝胶粒子。通过铁离子在碱性溶液中的还原反应诱导了水凝胶粒子的物理交联。“逐滴法”和“乳化法”用于控制颗粒的尺寸，分别产生毫米和微米尺度的水凝胶颗粒。所制备的颗粒具有磁性，易于在离子吸附后收获。根据颗粒的大小，研究了使用颗粒去除铯离子的效率。随着微米级颗粒的表面积增加，颗粒可以增加除去铯的效率。此外，采用准一级/二级反应模型对所制备颗粒的吸附机理进行了进一步的研究。
The Prussian blue (PB)-decorated magnetic hydrogel particles are prepared by physical crosslinking of poly (vinyl alcohol) and in-situ PB-decoration. The physical crosslinking of the hydrogel particle was induced by reductive reaction of the iron ions in basic solution. "Drop-wise method" and "emulsification methods" were used to control the size of the particle, resulting in hydrogel particles with millimeter and micrometer scale, respectively. The prepared particles have magneticity for easy harvesting after ion absorption. The efficiency of removing cesium ions using the particles is investigated depending on the size of particle. As the surface area increases in the micron-sized particle, the particle can increase the efficiency of removing cesium. In addition, the adsorption mechanism of the prepared particle is further studied using pseudo-first/second order reaction model.