Hydrothermal Synthesis of Yttria-Stabilized Zirconia Nanocrystals with Controlled Yttria Content
Hydrothermal Synthesis of Yttria-Stabilized Zirconia Nanocrystals with Controlled Yttria Content
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控制氧化钇含量的氧化钇稳定氧化锆纳米晶的水热合成
DOI：
10.1021/acs.inorgchem.5b01112
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发表时间：
2015
影响因子：
4.6
通讯作者：
Hiroya Abe
中科院分区：
文献类型：
--
作者：
Kazuyoshi Sato;Kazuya Horiguchi;Taku Nishikawa;Sadahiro Yagishita;Kazuo Kuruma;Takeshi Murakami;Hiroya Abe
在这项研究中，我们首次证明了水热合成具有可控制的Y含量(x=3-12摩尔%；xYSZ)的氧化钇稳定的氧化锆(YSZ)纳米晶，而水溶液中的团聚可以忽略不计。在阳离子配体N(CH3)4+的存在下，通过水热处理碱性的Zr(IV)和Y(III)碳酸盐络合物水溶液生长了纳米晶。用动态光散射、ζ电位测量、X射线衍射、基于Brunauer-Emmett-Teller理论的比表面积测量、透射电子显微镜、能量色散X射线光谱和拉曼光谱对纳米晶进行了详细的表征。较短的反应时间和较高的Y2O含量可以产生透明度较高的水溶液，其中含有尺寸在10 nm或更小的纳米晶体。无论Y2O含量如何，水热反应3h以上均可得到具有目标组成的纳米晶。(3-6)YSZ的主相为四方相，(8-12)YSZ的主相为立方相，氧空位无序。所合成的纳米晶材料的特性与块体YSZ晶体的特性一致，表明生长出了高质量的纳米晶。
In this study, we demonstrate for the first time the hydrothermal synthesis of yttria-stabilized zirconia (YSZ) nanocrystals with controlled yttria content (x= 3–12 mol %;xYSZ) with negligible aggregation from aqueous solution. The nanocrystals were grown via the hydrothermal treatment of basic Zr(IV) and Y(III) carbonate complex aqueous solutions in the presence of a cationic ligand, N(CH3)4+. The nanocrystals were characterized in detail by dynamic light scattering, ζ-potential measurement, X-ray diffraction, specific surface area measurement based on the Brunauer–Emmett–Teller theory, transmission electron microscopy, energy dispersive X-ray spectroscopy, and Raman spectroscopy. Shorter reaction times and higher Y2O3content produce aqueous solutions with higher transparencies containing nanocrystals with sizes of 10 nm or less. Nanocrystals with the target composition were obtained by hydrothermal reaction for longer than 3 h, regardless of the Y2O3content. The main phase is tetragonal for (3–6)YSZ and cubic with disordered oxygen vacancies for (8–12)YSZ. The characteristics of the nanocrystalline material synthesized are consistent with those of bulk YSZ crystals, indicating the growth of high-quality nanocrystals.