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Prussian blue caged in spongiform adsorbents using diatomite and carbon nanotubes for elimination of cesium

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Title: Prussian blue caged in spongiform adsorbents using diatomite and carbon nanotubes for elimination of cesium
Authors: Hu, Baiyang Browse this author
Fugetsu, Bunshi Browse this author →KAKEN DB
Yu, Hongwen Browse this author
Abe, Yoshiteru Browse this author
Keywords: Prussian blue
Diatomite
Carbon nanotubes
Polyurethane polymers
Radioactive cesium
Issue Date: 30-May-2012
Publisher: Elsevier B.V.
Journal Title: Journal of Hazardous Materials
Volume: 217-218
Start Page: 85
End Page: 91
Publisher DOI: 10.1016/j.jhazmat.2012.02.071
PMID: 22464752
Abstract: We developed a spongiform adsorbent that contains Prussian blue, which showed a high capacity for eliminating cesium. An in situ synthesizing approach was used to synthesize Prussian blue inside diatomite cavities. Highly dispersed carbon nanotubes (CNTs) were used to form CNT networks that coated the diatomite to seal in the Prussian blue particles. These ternary (CNT/diatomite/Prussian-blue) composites were mixed with polyurethane (PU) prepolymers to produce a quaternary (PU/CNT/diatomite/Prussian-blue), spongiform adsorbent with an in situ foaming procedure. Prussian blue was permanently immobilized in the cell walls of the spongiform matrix and preferentially adsorbed cesium with a theoretical capacity of 168 mg/g cesium. Cesium was absorbed primarily by an ion-exchange mechanism, and the absorption was accomplished by self-uptake of radioactive water by the quaternary spongiform adsorbent.
Type: article (author version)
URI: http://hdl.handle.net/2115/49355
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 古月 文志

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