Radiation induced grafting of amphiphilic double poly(ionic liquid) copolymer onto silica surface for the removal of ReO4− as analogue of TcO4

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 332; no. 6; pp. 1869 - 1881
• Main Authors: Zhang, Na, Yang, Miao, Zhang, Manman, Du, Jifu, Bao, Qiburi, Zhao, Long, Dong, Zhen
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.06.2023; Springer Nature B.V
• Subjects: Acid resistance; Adsorption; Chemistry; Chemistry and Materials Science; Copolymers; Diagnostic Radiology; Graft copolymers; Groundwater; Hadrons; Heavy Ions; Hydrophobicity; Imidazole; Inorganic Chemistry; Ionic liquids; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Radiation effects; Silicon dioxide; Wastewater; Removal; Radiation grafting; TcO; Poly(ionic liquid); ReO; Silica
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-023-08849-w

Amphiphilic double poly(imidazole ionic liquid) grafted silica (SMIL-n) was prepared by radiation grafting of hydrophilic 1-vinyl-3-ethylimidazolium bromide and hydrophobic 1-vinyl-3-octylimidazolium bromide at different ratio onto silica. The adsorption behavior of SMIL-n was investigated. The adsorption equilibrium could reach less than 45 min, and their adsorption capacity were 152–171 mg/g obtained from Langmuir model. The selectivity of SMIL-n to ReO 4 − increased with the increasing content of hydrophobic ionic liquid. SMIL-n displayed good reusability, excellent acid resistance and irradiation resistance. Particularly, SMIL-n showed promising for ReO 4 − uptake from simulated contaminated Beishan groundwater and radioactive wastewater.