Cesium sorption stu dies on mesoporous MCM-۴۱ impregn ated with potassium zinc hexac yanoferrate

The m anagement of radioactive wastes has become a major concern, particu larly with regard to the release of r adioactive m aterials in the environm ent. ۱۳۷Cs and ۱۳۵Cs are among the main fission products in radioactive wastes [۱]. Among various inor ganic ion-exchange materials exhibiting selecti ve sorption properties for radiocesium, the hexacyanoferrates of transition elements have bee n studied e xtensively due to the stabilizing effe ct of the large cesium ion on the crystal structu re of the s orbent. MC M-۴۱ is on e of the im portant inorganic adsor bents, which possess unique features such as large uniform pore sizes (۱.۵–۱۰ nm), highly ordered nanochannels and large surface areas (~۱۵۰۰ m۲/g), and large pore volu me with re gular hexagonal structu re [۲]. In this work, Mesoporous MCM-۴۱ was chosen for supp orting potassium zinc hexacyanoferrate (KZnCF) to prepare a new Cs-se lective mat erial.

کلیدواژه ها:

Mesoporous MCM-۴۱ ، Zinc hexacyanofe rrate ، Cesium sorption