Preparation of mesoporous MnO2/SBA-15 and its cesium ion adsorption properties

被引：5
作者：
Xian, Qiang [1 ]
He, Xinmiao [1 ]
Wang, Enchao [1 ]
Bai, Zimei [1 ]
Zhao, Dandan [1 ]
Dan, Hui [1 ]
Ding, Yi [1 ]
Zhu, Wenkun [1 ]
机构：
[1] Southwest Univ Sci & Technol, Key Subject Lab Natl Def Radioact Waste & Environ, Mianyang 621010, Sichuan, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2021年 / 327卷 / 01期
基金：
中国国家自然科学基金;
关键词：
MnO2; SBA-15; Cs+; Preparation; Adsorption; loading; HYDROUS MANGANESE-DIOXIDE; AQUEOUS-SOLUTIONS; SILICA SBA-15; FUNCTIONALIZED SBA-15; CARBON NANOTUBES; STRONTIUM IONS; OXIDE; EXTRACTION; COMPOSITE; SORPTION;
D O I：
10.1007/s10967-020-07522-w
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Mesoporous MnO2/SBA-15 was prepared by a facile route using KMnO4 and MnCl2 as Mn source and used for removal of Cs+. The effects of MnO2 content, initial Cs+ concentration, contact time and pH on the Cs+ adsorption behavior were investigated. It was found that Cs+ adsorption capacity of SBA-15 can be significantly improved by MnO2 loading. The adsorption capacity increased with increasing MnO2 content. Furthermore, the adsorption data can be well fitted by the Langmuir model, and the calculated maximum adsorption capacity of 80%MnO2/SBA-15 is 104.8 mg/g. The Cs+ adsorption process can be better described by the pseudo-second-order model.
引用
收藏
页码：505 / 512
页数：8
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