Synthesis and characterization of mixed-morphology CePO4 nanoparticles

Karpowich, Lindsey; Wilcke, S. L.; Yu, Rong; Harley, Gabriel; Reimer, Jeffrey A.; Jonghe, Lutgard C. De

doi:10.1016/j.jssc.2006.12.009

Cited by 37 publications

(13 citation statements)

References 16 publications

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“…The almost zero isotropic chemical shift σ iso =( σ x + σ y + σ z )/3=−14.7 ppm is consistent with the non‐magnetic 4f 0 state of the Ce 4+ ion. Indeed, the bulk monazite cerium phosphate CePO 4 with a magnetic 4f 1 configuration of Ce 3+ ions showed a much stronger 31 P isotropic shift of −94 ppm . Thus, the obtained 31 P NMR data thoroughly support our Ce(OH)PO 4 structural refinement.…”

Section: Resultssupporting

confidence: 77%

Meet the Cerium(IV) Phosphate Sisters: Ce^IV(OH)PO₄ and Ce^IV₂O(PO₄)₂

Kozlova

Миронов

Istomin

et al. 2020

Chemistry A European J

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Two new cerium(IV) phosphates were obtained: cerium(IV) hydroxidophosphate, Ce(OH)PO4, and cerium(IV) oxidophosphate, Ce2O(PO4)2, which were shown to complement the classes of isostructural compounds M(OH)PO4 and R2O(PO4)2, where M=Th, U and R=Th, U, Np, Zr. Ce2O(PO4)2 oxidophosphate is formed by elimination of H2O from the crystal structure of Ce(OH)PO4 during its thermal decomposition. The structures of Ce(OH)PO4 and Ce2O(PO4)2 are related to each other with the same Cmce space group and similar unit cell parameters (a=6.9691(3) Å, b=9.0655(4) Å, c=12.2214(4) Å, V=772.13(8) Å3, Z=8; a=7.0220(4) Å, b=8.9894(5) Å, c=12.544(1) Å, V=791.8(1) Å3, Z=4, respectively).

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Section: Resultssupporting

confidence: 77%

Meet the Cerium(IV) Phosphate Sisters: Ce^IV(OH)PO₄ and Ce^IV₂O(PO₄)₂

Kozlova

Миронов

Istomin

et al. 2020

Chemistry A European J

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“…In addition to the nature and behaviors of hydrogen‐containing species, solid‐state NMR is able to provide useful information for a number of important inorganic nuclei, typically 27 Al, 29 Si, and 31 P. For analyzing conducting and semiconducting materials, the 31 P MAS NMR method has been applied to studies on phosphate glasses: structural changes in sodium phosphate glass, zinc ultraphosphate glass, and boron orthophosphate induced by moisture were examined by 31 P dipolar‐decoupling (DD) and/or cross‐polarization (CP) MAS NMR. The bulk structures of mixed‐morphology CePO 4 nanoparticles can be also examined by variable temperature 31 P DD‐MAS NMR and the analysis of spin–lattice relaxation time of phosphorus nuclei (T 1 P) …”

Section: Introductionmentioning

confidence: 99%

Solid‐state NMR study of dopant effects on the chemical properties of Mg‐, In‐, and Al‐doped SnP₂O₇

Nishida

Tanaka

Fukaya

et al. 2014

Magnetic Reson in Chemistry

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The effects of doped low-valence cations on the properties of the SnP2 O7 proton conductor at ambient temperature are investigated from changes in solid-state NMR spectra and nuclear magnetic relaxation times. Although the T1 H values increased with decreasing acidity as a result of cation exchange, the (1)H chemical shifts moved to lower field in Al- and In-doped materials compared with undoped ones. Furthermore, the shifts changed to higher field in Mg-doped materials, suggesting the existence of different protonic species in those materials. The bulk phosphate chemical shifts in the (31)P dipolar-decoupling MAS NMR spectra were very similar, regardless of the nature and amount of the doping species. On the other hand, by (1)H/(31)P cross-polarization MAS NMR, P2O7 signals interacting with an interstitial proton [Q(1)(proton)] were observed in all the undoped and doped SnP2 O7, while acidic P-OH-type phosphate signals [Q(1)(acid)] were additionally observed in the Mg-doped conductor. The different affinity of the proton with the dopants and phosphates caused lower conductivity and larger activation energy in the Mg-doped materials, compared with those in the In- and Al-doped materials.

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“…Up to now, synthesis approaches including sol-gel, microemulsion, hydrothermal, combustion and solid-state methods have been employed in these materials' preparation. [5][6][7][8][9] Among various routes, solution synthesis is recognized as being versatile and fit for reduplicate preparation of diverse nanomaterials, [10][11][12][13][14] for the advantages of mild reaction condition and easy control. Among rare earth phosphates, CePO 4 has attracted researchers' attention especially because of the higher abundance of Ce element and its potential applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CePO<SUB>4</SUB> Nano-Wires with Improved Photoluminescent Properties by Co-Crystallizing with Nano-Sized CeO<SUB>2</SUB>

Yu²,

Wang³

et al. 2013

j. nanosci. nanotech.

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By adjusting experimental parameters, such as reaction time and ratios, CeO2/CePO4 composites have been prepared through a single-step hydrothermal process, in which CeO2 octahedra and CePO4 nanowires mingled with each other to form many interfaces. The formation of the particular structure can be explained by heterogeneous nucleation theory: the existed CePO4 nanowires at the early stage of hydrothermal process provide many thermodynamically favorable sites, on which the nucleation energy of octahedral CeO2 is the lowest. The photoluminescent (PL) properties of CeO2/CePO4 composites showed that the strongest PL emission can be achieved with initial Ce/P of 4 and hydrothermal time of 24 h. And final Ce/P of the samples at this point was the maximum value by the EDS analysis. So it was proposed that the interaction between more CeO2 and the more coatings of CeO2 to CePO4 are responsible for the best PL properties.

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Synthesis and characterization of mixed-morphology CePO4 nanoparticles

Cited by 37 publications

References 16 publications

Meet the Cerium(IV) Phosphate Sisters: Ce^IV(OH)PO₄ and Ce^IV₂O(PO₄)₂

Meet the Cerium(IV) Phosphate Sisters: Ce^IV(OH)PO₄ and Ce^IV₂O(PO₄)₂

Solid‐state NMR study of dopant effects on the chemical properties of Mg‐, In‐, and Al‐doped SnP₂O₇

Synthesis of CePO<SUB>4</SUB> Nano-Wires with Improved Photoluminescent Properties by Co-Crystallizing with Nano-Sized CeO<SUB>2</SUB>

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Synthesis and characterization of mixed-morphology CePO4 nanoparticles

Cited by 37 publications

References 16 publications

Meet the Cerium(IV) Phosphate Sisters: CeIV(OH)PO4 and CeIV2O(PO4)2

Meet the Cerium(IV) Phosphate Sisters: CeIV(OH)PO4 and CeIV2O(PO4)2

Solid‐state NMR study of dopant effects on the chemical properties of Mg‐, In‐, and Al‐doped SnP2O7

Synthesis of CePO<SUB>4</SUB> Nano-Wires with Improved Photoluminescent Properties by Co-Crystallizing with Nano-Sized CeO<SUB>2</SUB>

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Meet the Cerium(IV) Phosphate Sisters: Ce^IV(OH)PO₄ and Ce^IV₂O(PO₄)₂

Meet the Cerium(IV) Phosphate Sisters: Ce^IV(OH)PO₄ and Ce^IV₂O(PO₄)₂

Solid‐state NMR study of dopant effects on the chemical properties of Mg‐, In‐, and Al‐doped SnP₂O₇