Zinc Adsorption and Hydration Structures at Yttria-Stabilized Zirconia Surfaces

Journal Article · Mon Sep 11 00:00:00 EDT 2017 · Journal of Physical Chemistry. C

DOI:https://doi.org/10.1021/acs.jpcc.7b02907· OSTI ID:1467891

Hou, Binyang  ^[1]; Kim, Taeho ^[2]; Kim, Seunghyun ^[2]; Park, Changyong  ^[1]; Bahn, Chi Bum ^[3]; Kim, Jongjin ^[4]; Hong, Seungbum  ^[5]; Kim, Ji Hyun  ^[2]

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1. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Collaborative Access Team (HPCAT)
2. Ulsan National Inst. of Science and Technology, Ulsan (South Korea). Dept. of Nuclear Engineering, School of Mechanical, Aerospace, and Nuclear Engineering
3. Pusan National Univ., Busan (Korea, Republic of). School of Mechanical Engineering
4. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
5. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Materials Science and Engineering

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.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); Korea Institute of Energy Technology Evaluation and Planning (KETEP); USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC02-06CH11357; NA0001974; FG02-99ER45775
• OSTI ID: 1467891
• Journal Information: Journal of Physical Chemistry. C, Vol. 121, Issue 39; ISSN 1932-7447
• Publisher: American Chemical Society
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY