title: Uptake of hazardous radionuclides within layered chalcogenide for environmental protection.
abstract: Ensuring environmental protection in and around nuclear facilities is a matter of deep concern. Toward this, layered chalcogenide with CdI2 crystal structure has been prepared. Structural characterizations of layered chalcogenide suggest 'topotactic ionic substitution' as the dominant mechanism behind uptake of different cations within its lattice structure. An equilibration time of 45 min and volume to mass ratio of 30:1 are found to absorb (233)U, (239)Pu, (106)Ru, (85+89)Sr, (137)Cs and (241)Am radionuclides to the maximum extents.
authors.affiliation: Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. Electronic address: praneshsengupta@gmail.com.
authors.forename: Pranesh
authors.initials: P
authors.lastname: Sengupta
authors.affiliation: Fuel Reprocessing Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: N L
authors.initials: NL
authors.lastname: Dudwadkar
authors.affiliation: Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: B
authors.initials: B
authors.lastname: Vishwanadh
authors.affiliation: Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: V
authors.initials: V
authors.lastname: Pulhani
authors.affiliation: Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: Rekha
authors.initials: R
authors.lastname: Rao
authors.affiliation: Fuel Reprocessing Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: S C
authors.initials: SC
authors.lastname: Tripathi
authors.affiliation: Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: G K
authors.initials: GK
authors.lastname: Dey
mesh_terms: D000327:Adsorption; D019187:Cadmium Compounds / Q000737:chemistry; D004787:Environmental Pollution / Q000517:prevention & control; D007454:Iodides / Q000737:chemistry; D011868:Radioisotopes / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D007454:Iodides; D011868:Radioisotopes; D013440:Sulfides; C073250:cadmium iodide
keywords: CdI2 type structure; Environmental protection; Layered chalcogenide; Radionuclide adsorption