Sorption of Eu (III) onto Nano-Sized H-Titanates of Different Structures

Abstract

Hydrogen titanates (H-titanates) of different nanostructures (nanotubes, nanowires, nanosheets) have been synthesized by hydrothermal methods. The europium (III) sorption from aqueous solutions onto nano-sized H-titanates was studied as a function of contact time, pH values, and initial Eu (III) concentration in batch experiments. Reversibility of adsorption of europium has been investigated as well. Nano-sized H-titanates can be used for tri-valent f-elements removal in polluted water treatment due to fast and efficient sorption of Eu (III).

Polyphosphate‐Grafted Fe3O4 Nanomagnets for the Removal of Trivalent Radionuclides from Acidic Nuclear Waste Solution

“…The sorption is supposed to be monolayer and is limited by the availability of the complexing sites. Comparative evaluation of the sorption capacities of various sorbents for Eu(III) are presented in Table 5 [14,26] . From the Table, it can be seen that the maximum sorption capacity of PPNM is higher than most of the sorbents mentioned and even if the sorption capacity is lower compared to some sorbents, the possibility of magnetic separation of PPNMs after sorption is an extra benefit compared to most of the sorbents.…”

Synthesis and Characterization of Pyrochlore-Type Praseodymium Stannate Nanoparticles: An Effective Electrocatalyst for Detection of Nitrofurazone Drug in Biological Samples

“…Based on the oxygen vacancies, the pyrochlore structure closely resembles the uniformly arranged inadequate fluorite structure (space group Fd 3̅ m ). Due to the combination of aforementioned crystal structures, the pyrochlore oxides such as Y 2 Ti 2 O 7 , Eu 2 Ti 2 O 7 , Y 2 Ru 2 O 7 , and Nd 2 Sn 2 O 7 have been successfully synthesized and utilized as electrocatalyst for various electrochemical applications because of their tunable lattice structure, high chemical stability, and the existence of abundant oxygen vacancies. ,− In addition to that, the ability to substitute different ions into the A- and B-site elements while maintaining the same crystal structure provides another powerful strategy to tune the concentration of oxygen vacancies, electronic structures, and their electrochemical activity …”

Potentiality of Graphene Oxide and Polyoxometalate as Radionuclides Adsorbent to Restore the Environment after Fukushima Disaster: A Mini Review

“…Similar to GO, the POM derivatives are high-performance adsorbent nanomaterials. The synthesis of materials that can function as radionuclide adsorbents, such as H-titanate nanotubes [27] and phlogopite [28], has been reported. However, not all the reported materials are excellent adsorbents.…”