DOI: 10.1063/1.2768315. Vanadia-based equilibrium-thickness amorphous films on anatase (101) surfaces

Vanadia-based equilibrium-thickness amorphous films on anatase (101) surfaces

10.1063/1.2768315

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Nanometer-thick, surficial amorphous films are found to form in a model “monolayer” catalyst system: vanadia on TiO2 anatase (101) surfaces. These films exhibit a self-selecting or “equilibrium” thickness; once a thermodynamic equilibrium is reached, the film thickness, which corresponds to the Gibbsian surface excess of vanadia adsorbates, is independent of synthesis methods, the fraction of secondary vanadia phase, and the heat treatment history. These (multilayer) adsorbate films are largely amorphous (quasiliquid) at subeutectic temperatures, where analogies to premelting and prewetting phenomena are made. Reversible film thickness versus temperature (with a hysteresis loop) is observed and explained from a force-balance model.

Bibliography

Qian, H., & Luo, J. (2007). Vanadia-based equilibrium-thickness amorphous films on anatase (101) surfaces. Applied Physics Letters, 91(6).

Authors 2

Haijun Qian (first)
Jian Luo (additional)

References 32 Referenced 31

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Dates

Type	When
Created	18 years ago (Aug. 7, 2007, 6:10 p.m.)
Deposited	1 year, 6 months ago (Feb. 17, 2024, 3:46 a.m.)
Indexed	3 weeks, 2 days ago (July 30, 2025, 6:49 a.m.)
Issued	18 years ago (Aug. 6, 2007)
Published	18 years ago (Aug. 6, 2007)
Published Online	18 years ago (Aug. 7, 2007)
Published Print	18 years ago (Aug. 6, 2007)

Funders 0

None

BibTeX

@article{Qian_2007, title={Vanadia-based equilibrium-thickness amorphous films on anatase (101) surfaces}, volume={91}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.2768315}, DOI={10.1063/1.2768315}, number={6}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Qian, Haijun and Luo, Jian}, year={2007}, month=aug }

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