Morphology-controlled synthesis of yttrium hafnate by oxalate co-precipitation method and the growth mechanism

Zhou, Bo; Zhou, Guanghui; An, Liqiong; Zhang, Fang; Zhang, Guangjun; Wang, Shiwei

doi:10.1016/j.jallcom.2009.03.003

Cited by 9 publications

(5 citation statements)

References 29 publications

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“…Typically, precipitates are prepared and then the target oxide products are obtained by a subsequent calcination process. In previous works, Ln 2 Ti 2 O 7 (Ln = Lu, Gd, Yb, Tm) [69,70] [73], and Gd 2 Hf 2 O 7 :Ce [74] powders were prepared by co-precipitation method. The morphology of the ceramic powders can be modified by adding surfactant [73].…”

Section: Co-precipitation Methodsmentioning

confidence: 99%

“…In previous works, Ln 2 Ti 2 O 7 (Ln = Lu, Gd, Yb, Tm) [69,70] [73], and Gd 2 Hf 2 O 7 :Ce [74] powders were prepared by co-precipitation method. The morphology of the ceramic powders can be modified by adding surfactant [73]. Zhou et al [73] prepared Y 2 Hf 2 O 7 powders by oxalate co-precipitation method, and different shapes such as platelet, rod, and spherical shape were obtained by controlling the concentration of the surfactant PEG6000 ( Fig.…”

Section: Co-precipitation Methodsmentioning

confidence: 99%

“…The morphology of the ceramic powders can be modified by adding surfactant [73]. Zhou et al [73] prepared Y 2 Hf 2 O 7 powders by oxalate co-precipitation method, and different shapes such as platelet, rod, and spherical shape were obtained by controlling the concentration of the surfactant PEG6000 ( Fig. 2).…”

Section: Co-precipitation Methodsmentioning

confidence: 99%

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Recent development of A2B2O7 system transparent ceramics

et al. 2018

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A 2 B 2 O 7 system compounds, which usually present three phase structures mainly based on the ionic radius ratios of r A and r B (r A /r B), have been studied for potential applications in many fields, such as thermal barrier coatings, luminescence powders, fast-ion conductors, photocatalysts, and matrices for immobilization of highly active radionuclides. Since 2005, La 2 Hf 2 O 7 was fabricated into transparent ceramics and much more attentions were paid on A 2 B 2 O 7 transparent ceramics for new applications. In this review, the development of A 2 B 2 O 7 system transparent ceramics was described. The structure characteristics, powder synthesis method, and sintering techniques of the final A 2 B 2 O 7 transparent ceramics were summarized. After that, the mostly reported A 2 Hf 2 O 7 , A 2 Zr 2 O 7 , and A 2 Ti 2 O 7 system transparent ceramics were systematically introduced. The potential application fields and future development trends were also discussed, focusing on scintillators, optical elements, and other luminescent materials.

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Section: Co-precipitation Methodsmentioning

confidence: 99%

Section: Co-precipitation Methodsmentioning

confidence: 99%

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Recent development of A2B2O7 system transparent ceramics

et al. 2018

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“…All wet chemistry methods involve mixing of reactant precursors at the molecular level, thus better chemical reactivity. These soft chemical methods for the preparation of Ln 2 Hf 2 O 7 include coprecipitation [22], the Pechini polymeric route [23], molten salt [24] and combustion processing [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Soft chemical synthesis and structural characterization of Y2HfxTi2−xO7

Kong

Zhang

Whittle

et al. 2015

Ceramics International

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“…Selection of compatible hosts plays a very important role in designing desirable red phosphors. Yttrium hafnate Y 2 Hf 2 O 7 (YHO) is one of the most important pyrochlore materials for advanced technological applications such as enhancing the structural and thermal properties of metals, 21 scintillators, 22 computer tomography (CT) and positron emission tomography (PET), 23 order-disorder phase transitions, 24 and so forth. YHO is also known to exhibit excellent thermal stability, radiation stability, the ability to accommodate rare earth ions at both Y 3+ and Hf 4+ sites, and so on.…”

Section: Introductionmentioning

confidence: 99%