Journal ArticleDOI
Proton-exchange mechanism of specific Cs+ adsorption via lattice defect sites of Prussian blue filled with coordination and crystallization water molecules
Manabu Ishizaki,S. Akiba,A. Ohtani,Yuji Hoshi,Kenta Ono,M. Matsuba,Takanari Togashi,K. Kananizuka,Masatomi Sakamoto,Masatomi Sakamoto,Akira Takahashi,Tohru Kawamoto,Hisashi Tanaka,Masayuki Watanabe,Makoto Arisaka,Takuya Nankawa,Masato Kurihara,Masato Kurihara +17 more
TLDR
The synthesised PB-1, by a common stoichiometric aqueous reaction between 4Fe(3+) and 3[Fe(II)(CN)6](4-), showed much more efficient Cs(+) adsorption ability than did the commercially available PB-2.Abstract:
We have revealed the fundamental mechanism of specific Cs+ adsorption into Prussian blue (PB) in order to develop high-performance PB-based Cs+ adsorbents in the wake of the Fukushima nuclear accident. We compared two types of PB nanoparticles with formulae of FeIII4[FeII(CN)6]3·xH2O (x = 10–15) (PB-1) and (NH4)0.70FeIII1.10[FeII(CN)6]·1.7H2O (PB-2) with respect to the Cs+ adsorption ability. The synthesised PB-1, by a common stoichiometric aqueous reaction between 4Fe3+ and 3[FeII(CN)6]4−, showed much more efficient Cs+ adsorption ability than did the commercially available PB-2. A high value of the number of waters of crystallization, x, of PB-1 was caused by a lot of defect sites (vacant sites) of [FeII(CN)6]4− moieties that were filled with coordination and crystallization water molecules. Hydrated Cs+ ions were preferably adsorbed via the hydrophilic defect sites and accompanied by proton-elimination from the coordination water. The low number of hydrophilic sites of PB-2 was responsible for its insufficient Cs+ adsorption ability.read more
Citations
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Defect‐Engineered Metal–Organic Frameworks
TL;DR: This Review provides both a concise overview of defects in MOFs, or more broadly coordination network compounds (CNCs), including their classification and characterization, together with the (potential) applications of defective CNCs/MOFs.
Journal ArticleDOI
Adsorption removal of cesium from drinking waters: A mini review on use of biosorbents and other adsorbents
Xiang Liu,Guan-Ru Chen,Duu-Jong Lee,Duu-Jong Lee,Tohru Kawamoto,Hisashi Tanaka,Man-Li Chen,Yu-Kuo Luo +7 more
TL;DR: This mini-review provided a summary on literature works to develop efficient adsorbent for removing Cs from waters and development of Prussian blue nanoparticles on Cs removal and its potential use in drinking waterworks was discussed.
Journal ArticleDOI
Recent developments in nanostructured inorganic materials for sorption of cesium and strontium: Synthesis and shaping, sorption capacity, mechanisms, and selectivity-A review.
TL;DR: Titanate, vanadate, and tungsten based materials, manganese oxides, hexacyanoferrates, metal sulfides, ammonium molybdophosphates, or hydroxyapatite, characterized by various structures and morphologies, are reviewed with the emphasis being put on synthesis and shaping of such materials.
Journal ArticleDOI
A Reliable Hybrid Adsorbent for Efficient Radioactive Cesium Accumulation from Contaminated Wastewater.
Md. Rabiul Awual,Tsuyoshi Yaita,Yuji Miyazaki,Daiju Matsumura,Hideaki Shiwaku,Tomitsugu Taguchi +5 more
TL;DR: Due to its high selectivity and reusability, significant volume reduction is expected as this promising hybrid adsorbent is used for Cs removal in Fukushima wastewater.
Journal ArticleDOI
Assessing of cesium removal from wastewater using functionalized wood cellulosic adsorbent.
Md. Nazmul Hasan,Mohamed A. Shenashen,Md. Munjur Hasan,Hussein Znad,Md. Rabiul Awual,Md. Rabiul Awual +5 more
TL;DR: The Mangrove charcoal modified adsorbent may open the new door to treat the Cs containing wastewater by being selective to Cs for the potential real radioactive Cs contaminated water.
References
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Journal ArticleDOI
Electrochemistry of polynuclear transition metal cyanides: Prussian blue and its analogues
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The crystal structure of Prussian Blue: Fe4[Fe(CN)6]3.xH2O
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Neutron diffraction study of Prussian Blue, Fe4[Fe(CN)6]3.xH2O. Location of water molecules and long-range magnetic order
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Catalysis of the reduction of molecular oxygen to water at Prussian blue modified electrodes
TL;DR: In this paper, the authors present mesures sur l'utilisation de voltammetrie cyclique and d'une electrode tournante a disque et anneau.
Journal ArticleDOI
Selective Capture of Cesium and Thallium from Natural Waters and Simulated Wastes with Copper Ferrocyanide Functionalized Mesoporous Silica
Thanapon Sangvanich,Vichaya Sukwarotwat,Robert J. Wiacek,Rafal M. Grudzien,Glen E. Fryxell,R. Shane Addleman,Charles Timchalk,Wassana Yantasee +7 more
TL;DR: FC-Cu-EDA-SAMMS has great potential to be used as orally administered drug for limiting the absorption of radioactive Cs and toxic Tl in gastrointestinal tract and was less affected by the solution pH, competing cations, and matrices.