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    Mechanochemically Synthesized Prussian Blue for Efficient Removal of Cesium Ions from Aqueous Solutions

    Year: 2022

    Journal: ACS Omega, Volume 7, FEB 1, page 3222–3229

    Authors: Lee, Ji Hwan; Kwak, Seung-Yeop

    Organizations: project for Collabo R&D between Industry, Academy, and Research Institute - Korea Ministry of SMEs and Startups in 2019 [0420-20190000]; SNU Materials Education/Research Division for Creative Global Leader [4120200513611]

    The adsorptive removal of radioactive cesium [Cs(I)] is important for ensuring a clean aquatic environment. In this work, the adsorption of Cs(I) was carried out using Prussian blue (PB) prepared by mechanochemical synthesis. X-ray diffraction, Fourier-transform infrared spectroscopy, and field-emission scanning electron microscopy results indicated that PB had been successfully synthesized by mechanochemical synthesis. Thermogravimetric analysis, contact angle analysis, inductively coupled plasma atomic emission spectrometry, elemental analysis, and electrophoretic light scattering spectrophotometry confirmed that several defects were formed, explaining the principal mechanism for the efficient adsorption over PB prepared by mechanochemical synthesis. The superior adsorption properties toward Cs(I) make PB prepared by mechanochemical synthesis an attractive candidate material for the efficient, economical, and eco-friendly processes for purifying radioactive wastewater.
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