Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

Dejun Zeng; Liyong Yuan; Pengcheng Zhang; Lin Wang; Zijie Li; Youqun Wang; Yunhai Liu; Weiqun Shi

doi:10.1016/j.isci.2021.102982

Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

iScience. 2021 Aug 18;24(9):102982. doi: 10.1016/j.isci.2021.102982. eCollection 2021 Sep 24.

Authors

Dejun Zeng^{1

2}, Liyong Yuan¹, Pengcheng Zhang³, Lin Wang¹, Zijie Li¹, Youqun Wang², Yunhai Liu², Weiqun Shi¹

Affiliations

¹ Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
² State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China.
³ Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China.

Abstract

HKUST-1@CMC (HK@CMC) composites that show good acid and alkali resistance and radiation resistance were successfully synthesized by introducing carboxymethyl cellulose (CMC) onto the surface of HKUST-1 using a foaming strategy. For the first time, the composites were explored as efficient adsorbents for U(VI) trapping from aqueous solution, with encouraging results of large adsorption capacity, fast adsorption kinetics, and desirable selectivity toward U(VI) over a series of competing ions. More importantly, a hybrid derivative film was successfully prepared for the dynamic adsorption of U(VI). The results show that ∼90% U(VI) can be removed when 45 mg L^-1 U(VI) was passed through the film one time, and the removal percentage is still more than 80% even after four adsorption-desorption cycles, ranking one of the most practical U(VI) scavengers. This work offers new clues for application of the Metal-organic-framework-based materials in the separation of radionuclides from wastewater.

Keywords: Chemistry; Engineering; Materials application; Materials chemistry; Materials science.