Facile one-pot synthesis of magnetic Prussian blue core/shell nanoparticles for radioactive cesium removal

• Published in: RSC advances Vol. 6; no. 98; pp. 96223 - 96228
• Main Authors: Chang, Ling, Chang, Shuquan, Chen, Wei, Han, Wei, Li, Zheng, Zhang, Zheng, Dai, Yaodong, Chen, Da
• Format: Journal Article
• Language: English
• Published: 01.01.2016
• Subjects: Adsorption; Electron microscopes; Fourier transforms; Magnetization; Nanoparticles; Radioactive waste; Synthesis; Transmission electron microscopy
• ISSN: 2046-2069; 2046-2069
• DOI: 10.1039/c6ra17525b

Magnetic Prussian blue/Fe 3 O 4 core/shell nanoparticles were successfully fabricated via a facile one-pot method. The results of transmission electron microscope (TEM), X-ray diffraction patterns (XRD) and Fourier transform infrared spectra (FT-IR) reveal that the as-prepared products are 20-40 nm in diameter and have obvious core/shell structures, which consist of face-centered-cubic lattice Prussian blue and Fe 3 O 4 . They can be well dispersed in water and show obvious magnetism, which means they can be rapidly separated by a magnet. The results of adsorption experiments indicate that their maximal adsorption capacities for Cs + are 145.8 and 132.6 mg g −1 , respectively. After magnetic separation, the Cs + removal efficiency remains at more than 90% when the Cs + concentration in solution is 50 μg mL −1 . The magnetization and Cs + adsorption properties can be easily adjusted by changing the content of Fe 3 O 4 in nanocomposites. The synthesis strategy and mechanism are also generally discussed. The resulting magnetic Prussian blue nanoparticles can be widely applied to treat radioactive waste water containing cesium ions. Magnetic Prussian blue/Fe 3 O 4 core/shell nanoparticles for radioactive cesium removal were successfully fabricated via a facile one-pot method.