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

Mesoporous MnO 2 /SBA-15 was prepared by a facile route using KMnO 4 and MnCl 2 as Mn source and used for removal of Cs + . The effects of MnO 2 content, initial Cs + concentration, contact time and pH on the Cs + adsorption behavior were investigated. It was found that Cs + adsorption capacity of S...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2021, Vol.327 (1), p.505-512
Main Authors: Xian, Qiang, He, Xinmiao, Wang, Enchao, Bai, Zimei, Zhao, Dandan, Dan, Hui, Ding, Yi, Zhu, Wenkun
Format: Article
Language:English
Subjects:
Adsorption
Cesium
Cesium ions
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Ion adsorption
Manganese dioxide
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Potassium permanganate
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Summary:Mesoporous MnO 2 /SBA-15 was prepared by a facile route using KMnO 4 and MnCl 2 as Mn source and used for removal of Cs + . The effects of MnO 2 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 MnO 2 loading. The adsorption capacity increased with increasing MnO 2 content. Furthermore, the adsorption data can be well fitted by the Langmuir model, and the calculated maximum adsorption capacity of 80%MnO 2 /SBA-15 is 104.8 mg/g. The Cs + adsorption process can be better described by the pseudo-second-order model.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-020-07522-w