Biphenyl-bridged wrinkled mesoporous silica nanoparticles for radioactive iodine capture. (11th February 2019)

• Record Type: Journal Article
• Authors: Brown, Alexander T.; Lin, Jason; Thomas, Milana C.; Chabal, Yves J.; Balkus, Kenneth J.
• Is Part Of: MRS advances. Volume 4:Number 7(2019)
• Page Start: 435
• Page End: 439
• Publication Date: 2019-02-11
• Subjects: nanostructure, -- porosity, -- absorbent; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2019.75
• Languages: English
• ISSNs: 2059-8521

Abstract

ABSTRACT: The capture of volatile radioactive iodine-129 is an important process for nuclear fission. Biphenyl-bridged wrinkled mesoporous silica shows similar performance for iodine sequestration to commercial Ag-mordenite and avoids the use of expensive silver. The biphenyl-wrinkled mesoporous silica nanoparticles function as a scaffold for biphenyl groups and also as a fluorescent indicator for the loading of iodine. The nanoparticles have a surface area of 973 m 2 /g and the biphenyl molecules form an electron charge-transfer complex with iodine. Iodine was loaded into the biphenyl-bridged wrinkled mesoporous silica (BWMS) at 19 ± 0.2 % loading by mass.