Investigation of trimethylacetic acid adsorption on stoichiometric and oxygen-deficient CeO<sub>2</sub> (111) surfaces [electronic resource]
Inorganic And Physical Chemistry.
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Investigation of trimethylacetic acid adsorption on stoichiometric and oxygen-deficient CeO<sub>2</sub> (111) surfaces |h [electronic resource] |
| 260 | |a Washington, D.C. : |b United States. Department of Energy. ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 2016. | ||
| 300 | |a p. 15625-15631 : |b digital, PDF file. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through SciTech Connect. | ||
| 500 | |a 05/12/2016. | ||
| 500 | |a "la-ur--16-20620" | ||
| 500 | |a Physical Chemistry Chemical Physics. PCCP (Print) 18 23 ISSN 1463-9076; PPCPFQ AM. | ||
| 500 | |a Shail Sanghavi; Weina Wang; Manjula I. Nandasiri; Ajay S. Karakoti; Wenliang Wang; Ping Yang; S. Thevuthasan. | ||
| 520 | 3 | |a We studied the interactions between the carboxylate anchoring group from trimethylacetic acid (TMAA) and CeO<sub>2</sub>(111) surfaces as a function of oxygen stoichiometry using in situ X-ray photoelectron spectroscopy (XPS). The stoichiometric CeO<sub>2</sub>(111) surface was obtained by annealing the thin film under 2.0 × 10<sup>–5</sup> Torr of oxygen at ̃550 °C for 30 min. In order to reduce the CeO<sub>2</sub>(111) surface, the thin film was annealed under ̃5.0 × 10<sup>–10</sup> Torr vacuum conditions at 550 °C, 650 °C, 750 °C and 850 °C for 30 min to progressively increase the oxygen defect concentration on the surface. The saturated TMAA coverage on the CeO<sub>2</sub>(111) surface determined from XPS elemental composition is found to increase with increasing oxygen defect concentration. This is attributed to the increase of under-coordinated cerium sites on the surface with the increase in the oxygen defect concentrations. Furthermore, XPS results were in agreement with periodic density functional theory (DFT) calculations and indicate a stronger binding between the carboxylate group from TMAA and the oxygen deficient CeO<sub>2–δ</sub>(111) surface through dissociative adsorption. | |
| 520 | 0 | |a Inorganic And Physical Chemistry. | |
| 536 | |b AC52-06NA25396. | ||
| 650 | 7 | |a Inorganic, Organic, Physical, And Analytical Chemistry. |2 edbsc. | |
| 710 | 2 | |a Los Alamos National Laboratory. |4 res. | |
| 710 | 1 | |a United States. |b Department of Energy. |4 spn. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
| 856 | 4 | 0 | |u http://www.osti.gov/scitech/biblio/1329595 |z Online Access (via OSTI) |
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| 952 | f | f | |p Can circulate |a University of Colorado Boulder |b Online |c Online |d Online |e E 1.99:la-ur--16-20620 |h Superintendent of Documents classification |i web |n 1 |