Highly ordered macroporous silica dioxide framework embedded with supramolecular as robust recognition agent for removal of cesium
Highly ordered macroporous silica dioxide framework embedded with supramolecular as robust recognition agent for removal of cesium
复制标题
嵌入超分子的高度有序大孔二氧化硅框架作为去除铯的强大识别剂
DOI：
10.1016/j.jhazmat.2019.121467
复制
发表时间：
2020-06-05
影响因子：
13.6
通讯作者：
Liu, Yunhai
中科院分区：
文献类型：
--
作者：
Dai, Ying;Lv, Riwen;Liu, Yunhai
Owning to highly mechanical strength and non-interference effectivity, silica dioxide is often explored as a stable supporter commonly with mesopore. It is known that a macroporous framework has larger mass transfer channel, possibly beneficial to adsorption process. Herein highly ordered macroporous silica dioxide framework (homogeneous pore size of 194.20 nm) was synthesized and embedded with supramolecular (CC/OMS). Cs cation adsorption onto CC/OMS was explored under different pH (presence or absence of humic acid), initial cesium concentration, shaking time, competing ions. The robust cesium uptake capacity demonstrated by a theory adsorption amount of 150.01 mg/g highlighted unique CC/OMS properties combining large mass transfer channel and superior complex capacity of supramolecular. The adsorption was well fit with Langmuir and pseudo-second-order model. Sodium and potassium at a lower concentration showed little influence on cesium adsorption. The results demonstrated that CC/OMS was an alternative material for cesium capture from acidic aqueous solution.
