期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 9, 期 5, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2021.106140
关键词
Cesium adsorption; Urushiol; Thiol-ene; Hexacyanoferrate; Hybrid hydrogel
资金
- Open Project Program of Fujian Engineering and Research Center of New Chinese lacquerMaterials, Minjiang University, China [323030030702]
- Education Department of Fujian Province [JAT190605]
- Science and Technology Department of Fujian [2020J01833]
- National Natural Science Foundation of China [21903015]
- Natural Science Foundation of Fujian Province of China [2020J01145]
- Award Program of Fujian Minjiang Scholar Professorship
A novel adsorbent was synthesized through a specific synthetic route, and its structure and performance were experimentally confirmed to have promising application prospects in the treatment of nuclide-contaminated water.
To guarantee the sustainable development of the nuclear industry, it is vital to have a low-cost, green, and scalable route developed to synthesize efficient adsorbents for rapid and effective remediation of nuclide-contaminated water. In this study, a natural catechol derivative with unsaturated alkyl chain, urushiol, was aminated by mildly thiol-ene click with cysteamine to form a dopamine analogue, which can self-polymerize and trigger the formation of silicate plates into hydrogel framework and in-situ immobilize the potassium copper hexacyanoferrate, an efficient adsorbent, when hexacyanoferrate and excess Cu2+ were present in the silicate suspension. The chelation between Cu2+, poly-urushiol and hexacyanoferrate that assemble the hybrid hydrogel was confirmed by SEM and XPS and the performance of this hydrogel was evaluated in terms of adsorption capacity (214 mg g(-1)), selectivity (K-d >10(6) mg L-1), kinetics and reversible self-healing behavior with pleasing results obtained. The economic and nature-sourced property of the urushiol offers a green and novel concept to develop a satisfying adsorbing system for Cs+ removal.
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