Radiolytic syntheses of hollow UO2 nanospheres in Triton X-100-based lyotropic liquid crystals
1Beijing National Laboratory for Molecular Sciences, Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
Cite as: Yongming Wang, Qingde Chen, Xinghai Shen. Radiolytic syntheses of hollow UO2 nanospheres in Triton X-100-based lyotropic liquid crystals, nano Online. (2018). DOI: https://doi.org/10.1515/nano.0038.00028
Cite as: Yongming Wang, Qingde Chen, Xinghai Shen. Radiolytic syntheses of hollow UO2 nanospheres in Triton X-100-based lyotropic liquid crystals, Radiochimica Acta. 105, 369 (2016). DOI: https://doi.org/10.1515/ract-2016-2626
Abstract
Hollow nanospheres (ϕ: 60–80 nm, wall thickness: 10–20 nm), consisted of UO2 nanoparticles (ϕ: 3–5 nm), were successfully prepared in a Triton X-100-water (50:50, w/w) hexagonal lyotropic liquid crystal (LLC) by γ-irradiation, where water soluble ammonium uranyl tricarbonate was added as precursor. The product was stable at least up to 300°C. Furthermore, whether the nanospheres were hollow or not, and the wall thickness of the hollow nanospheres could be easily controlled via adjusting dose rate. While in the Triton X-100 based micellar systems, only solid nanospheres were obtained. At last, a possible combination mechanism containing adsorption, aggregation and fracturing processes was proposed.
Keywords: Hollow UO2 nanospheres; lyotropic liquid crystal; Triton X-100; γ-irradiation; ammonium uranyl tricarbonate
