Precipitation of rare earth vanadates from aqueous solution

Ropp, R.C.; Carroll, Benjamin

doi:10.1016/0022-1902(77)80286-8

Cited by 39 publications

(17 citation statements)

References 12 publications

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“…Namely, the strong absorption in ultraviolet region at $350 nm, followed by a shoulder at $400 nm, can be attributed to the vanadium(V)-oxide charge transfer bands. Most probable, the soluble species leaving the electrode surface at positive potentials are highly hydrated polymeric V(V) oxide species [49,50]. Since at cathodic polarization a blue/green coloration of electrolyte layer next to the electrode surface was visually observed, one may suppose that to some extent the dissolution of intercalated oxide is possible producing metal cations and V 2 O 5 À species.…”

Section: Uv/vis Spectroscopymentioning

confidence: 99%

The Influence of Intercalated Ions on Cyclic Stability of V2o5/Graphite Composite in Aqueous Electrolytic Solutions: Experimental and Theoretical Approach

Vujković

Pašti

Šimatović

et al. 2015

Electrochimica Acta

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Section: Uv/vis Spectroscopymentioning

confidence: 99%

The Influence of Intercalated Ions on Cyclic Stability of V2o5/Graphite Composite in Aqueous Electrolytic Solutions: Experimental and Theoretical Approach

Vujković

Pašti

Šimatović

et al. 2015

Electrochimica Acta

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“…It is expected that the order in which both LaCl 3 and Na 3 VO 4 are mixed can influence the encapsulation of surrogate cations and radionuclides within LaVO 4 NPs [41]. A low pH can lead to the precipitation of vanadate species that are different from VO 4 3− , whereas a pH >13 will lead to the precipitation of hydroxide species, such as La(OH) 3 [38,42,43]. Overall, this synthesis procedure is attractive for radiochemical settings, given its simplicity and the fact that different dopant cations can be incorporated into LaVO 4 NPs to provide luminescent and/or magnetic properties.…”

Section: Characterization Of Lavo 4 Npsmentioning

confidence: 99%

Tailoring the Radionuclide Encapsulation and Surface Chemistry of La(223Ra)VO4 Nanoparticles for Targeted Alpha Therapy

Toro-González

Peacock

Miskowiec

et al. 2021

JNT

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The development of targeted alpha therapy (TAT) as a viable cancer treatment requires innovative solutions to challenges associated with radionuclide retention to enhance local tumor cytotoxicity and to minimize off-target effects. Nanoparticles (NPs) with high encapsulation and high retention of radionuclides have shown potential in overcoming these issues. This article shows the influence of pH on the structure of lanthanum vanadate (LaVO4) NPs and its impact on the radiochemical yield of 223Ra and subsequent retention of its decay daughters, 211Pb and 211Bi. An acidic pH (4.9) results in a high fraction of La(223Ra)VO4 NPs with tetragonal structure (44.6–66.1%) and a 223Ra radiochemical yield <40%. Adjusting the pH to 11 yields >80% of La(223Ra)VO4 NPs with monoclinic structure and increases the 223Ra radiochemical yield >85%. The leakage of decay daughters from La(223Ra)VO4 NPs (pH 11) was <5% and <0.5% when exposed to deionized water and phosphate-buffered saline, respectively. Altering the surface chemistry of La(223Ra)VO4 NPs with carboxylate and phosphate compounds resulted in a threefold decrease in hydrodynamic diameter and a 223Ra radiochemical yield between 74.7% and 99.6%. These results show the importance of tailoring the synthesis parameters and surface chemistry of LaVO4 NPs to obtain high encapsulation and retention of radionuclides.

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“…[8][9][10] Especially lanthanide doped YVO 4 and GdVO 4 materials have been extensively studied. [11][12][13][14] It has been reported that nano-sized lanthanide doped rare-earth vanadates have higher luminescence efficiency than known commercial phosphors. 15 LaVO 4 materials of different size and shape have also been investigated.…”

Section: Introductionmentioning

confidence: 99%

Influence of Y³⁺, Gd³⁺, and Lu³⁺ co-doping on the phase and luminescence properties of monoclinic Eu:LaVO₄ particles

et al. 2015

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Nano-sized particles of monoclinic-LaVO4 were prepared in a short reaction time of 30 minutes by employing a microwave assisted hydrothermal synthesis in the presence of glycerol, which was used both as a solvent and structure-directing agent. The tetragonal-LaVO4 is known to show strong luminescence properties when doped with Ln(3+), whereas the monoclinic-LaVO4 is usually considered not suitable for luminescence and therefore luminescence properties of monoclinic-LaVO4 doped with Ln(3+) ions are seldom investigated. Due to the scarce amount of research on the topic of luminescence of Ln(3+) doped monoclinic-LaVO4 in this paper a detailed study of solid state luminescence properties, including quantum yields, of nano-sized monoclinic-LaVO4 doped with different molar percentages of Eu(3+) is presented. It was observed that the 12.5%Eu(3+) doped sample showed the strongest luminescence properties. Additionally a study of the influence of different rare-earth ions (Y(3+), Gd(3+), Lu(3+)) co-doped into the particles was performed in order to explore the potential of increasing the luminescence of these materials. Furthermore stable colloidal suspensions of the Eu(3+) doped monoclinic-LaVO4 nanoparticles showing strong red emission could be obtained.

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Precipitation of rare earth vanadates from aqueous solution

Cited by 39 publications

References 12 publications

The Influence of Intercalated Ions on Cyclic Stability of V2o5/Graphite Composite in Aqueous Electrolytic Solutions: Experimental and Theoretical Approach

The Influence of Intercalated Ions on Cyclic Stability of V2o5/Graphite Composite in Aqueous Electrolytic Solutions: Experimental and Theoretical Approach

Tailoring the Radionuclide Encapsulation and Surface Chemistry of La(223Ra)VO4 Nanoparticles for Targeted Alpha Therapy

Influence of Y³⁺, Gd³⁺, and Lu³⁺ co-doping on the phase and luminescence properties of monoclinic Eu:LaVO₄ particles

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Precipitation of rare earth vanadates from aqueous solution

Cited by 39 publications

References 12 publications

The Influence of Intercalated Ions on Cyclic Stability of V2o5/Graphite Composite in Aqueous Electrolytic Solutions: Experimental and Theoretical Approach

The Influence of Intercalated Ions on Cyclic Stability of V2o5/Graphite Composite in Aqueous Electrolytic Solutions: Experimental and Theoretical Approach

Tailoring the Radionuclide Encapsulation and Surface Chemistry of La(223Ra)VO4 Nanoparticles for Targeted Alpha Therapy

Influence of Y3+, Gd3+, and Lu3+ co-doping on the phase and luminescence properties of monoclinic Eu:LaVO4 particles

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Influence of Y³⁺, Gd³⁺, and Lu³⁺ co-doping on the phase and luminescence properties of monoclinic Eu:LaVO₄ particles