2013 Fiscal Year Final Research Report

Investigation for cesium uptake behavior by highly size controlled porous material of Metal-Organic Frameworks

Research Project

Project/Area Number	23760836
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Nuclear engineering
Research Institution	Japan Atomic Energy Agency
Principal Investigator	NANKAWA Takuya 独立行政法人日本原子力研究開発機構, バックエンド研究開発部門原子力科学研究所バックエンド技術部, 研究員 (30370448)
Project Period (FY)	2011 – 2013
Keywords	セシウム / ＭＯＦ / 配位高分子
Research Abstract	A novel cesium adsorption material utilizing metal-organic framework (MOF) with the formula of (NH4)[Ln (C2O4)2(H2O)] (Ln = Y, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb) was studied with the objective to investigate new cesium selective porous material to clean up cesium from radioactive waste water. The Cs+ adsorption is successfully occurred in aqueous solution in the presence of 10 mM NaCl and 1 mM CsCl, indicating these uptakes has selectivity to Cs+ than Na+. According to the results of Cs uptake experiments, we revealed that the cesium uptake reaction by the MOF is the exchange reation of NH4+ ion and Cs+ ion and capacity of uptake depend on the sizes of the MOFs.

(2 results)