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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Zinc Adsorption and Hydration Structures at Yttria-Stabilized Zirconia Surfaces
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Zinc Adsorption and Hydration Structures at Yttria-Stabilized Zirconia Surfaces

机译：氧化钇稳定的氧化锆表面的锌吸附和水合结构

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摘要

Zinc adsorption and interfacial hydration on yttria-stabilized zirconia (YSZ) surfaces in contact with aqueous zinc solutions at room temperature and neutral pH have been probed, with combined specular high-resolution X-ray reflectivity and element-specific (Zn) resonant anomalous X-ray reflectivity techniques. The total and partial zinc-Specific electron density profiles in the surface normal direction show the detailed interfacial hydration structures with zinc adsorption: Strongly depending on its crystallographic orientations, the YSZ (110) surface adsorbs zinc species only within adsorbed water layers above the terminal plane, while on (111) surface, zinc further-penetrates the substrate (below the terminal plane). Considering that both surfaces are enriched with oxygen vacancies and metal-depleted sites; on which chemisorbed water species are expected, the observed contrast indicates that specific zinc adsorption is controlled strongly by the intrinsic surface chemistry that results from orientation-dependent interfacial structures.
机译：探测锌吸附和界面水合与室温下与锌溶液接触的氧化钇稳定的氧化锌（YSZ）表面，并组合镜面高分辨率X射线反射率和元素特异性（Zn）共振异常X. - 射线反光技术。表面正常方向上的总锌特定电子密度曲线显示出具有锌吸附的详细界面水合结构：强烈取决于其晶体取向，YSZ（110）表面仅在端子平面上方的吸附水层内吸附锌种类，而在（111）表面上，锌进一步渗透基板（在端子平面下方）。考虑到这两个表面都富含氧空缺和金属耗尽的位点;预期化学含水物种，观察到的对比度表明，由取向依赖性界面结构产生的内在表面化学产生特异性锌吸附。

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