Release time:2025-01-24 Hits:
- Indexed by:Journal paper
- Document Code:133654
- First Author:Xinle Zhang
- Correspondence Author:Ran Niu
- Co-author:Ling Chen,Linhui Fu,Kai Feng,Jiang Gong,Jinping Qu
- Journal:Journal of Hazardous Materials
- Included Journals:SCI
- Discipline:Science
- First-Level Discipline:Chemistry
- Document Type:J
- Volume:467
- Key Words:Micro/nanomotors; Magnetic actuation; MOF/hydrogel composites; Uranium adsorption; Fluorescence detection
- DOI number:10.1016/j.jhazmat.2024.133654
- Date of Publication:2024-01-30
- Abstract:Self-propelled micro/nanomotors have attracted great attention for environmental remediation, however, their use for radioactive waste detection and removal has not been addressed. Engineered micromotors that are able to combine fast detection and highly adsorptive capability are promising tools for radioactive waste management but remain challenging. Herein, we design self-propelled micromotors based on zeolite imidazolate framework (ZIF-8)-hydrogel composites via inverse emulsion polymerization and show their potential for efficient uranium detection and removal. The incorporation of magnetic ferroferric oxide nanoparticles enables the magnetic recycling and actuation of the single micromotors as well as formation of swarms of worm-like or tank-treading structure. Benefited from the enhanced motion, the micromotors show fast and high-capacity uranium adsorption (747.3 mg g−1), as well as fast uranium detection based on fluorescence quenching. DFT calculation confirms the strong binding between carboxyl groups and uranyl ions. The combination of poly(acrylic acid-co-acrylamide) with ZIF-8 greatly enhances the fluorescence of the micromotor, facilitating the high-resolution fluorescence detection. A low detection limit of 250 ppb is reached by the micromotors. Such self-propelled micromotors provide a new strategy for the design of smart materials in remediation of radioactive wastewater.
- Links to published journals:https://doi.org/10.1016/j.jhazmat.2024.133654
