Fabrication of Magnetic Fe/Zn Layered Double Oxide@Carbon Nanotube Composites and Their Application for U(VI) and 241Am(III) Removal
Source abstract
Abstract
Magnetic Fe/Zn layered double oxide decorated carbon nanotubes (M-Fe/Zn-LDO@CNTs) composites were synthesized via a hydrothermal method with further calcination treatment. The fabricated M-Fe/Zn-LDO@CNTs were characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, UV–vis spectroscopy, scanning electron microscopy, and transmission electron microscopy and then applied for U(VI) elimination under diversiform experimental conditions, such as pH, temperature, ionic strength, contact time, and coexisting ions. The experimental results demonstrated that the U(VI) adsorption performance of M-Fe/Zn-LDO@CNTs was much higher than bare CNTs. The thermodynamic parameters revealed that U(VI) adsorption on M-Fe/Zn-LDO@CNTs was endothermic and spontaneous. More importantly, the adsorption performance of U(VI) on M-Fe/Zn-LDO@CNTs was still higher than ∼89% after five cycles. Furthermore, ∼95.9% of 241Am(III) could be removed by M-Fe/Zn-LDO@CNTs from solution at pH = 8.0, which confirmed that M-Fe/Zn-LDO@CNTs was an excellent material for efficient removal of long-lived lanthanides and actinides from environmental aqueous solutions in radionuclides’ pollution remediation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Radioactive element chemistry and processing · Chemical Synthesis and Characterization · Covalent Organic Framework Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, P. R. China
School of Chemistry, Biological and Materials Sciences, East China University of Technology, Nanchang, 330013, P. R. China
Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P. R. China
Department of Biology and Environmental Engineering, Hefei University, Hefei 230000, P. R. China
Funding
China Postdoctoral Science Foundation · National Natural Science Foundation of China · Science Challenge Project
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