Benzohydroxamic acid on rutile TiO2(110)-(1×1)– a comparison of ultrahigh-vacuum evaporation with deposition from solution

Köbl J, Fernández CC, Augustin LM, Kataev E, Franchi S, Tsud N, Pistonesi C, Pronsato ME, Jux N, Lytken O, Williams FJ, Steinrück HP (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Surface Science Elsevier

Book Volume: 716

Article Number: 121955

DOI: 10.1016/j.susc.2021.121955

Abstract

Hydroxamic acids are an interesting anchor group for organic molecules on oxide surfaces, but very few studies exist on their adsorption on well-defined single-crystal surfaces under well-defined conditions. In the present paper, we use X-ray photoelectron spectroscopy to follow the adsorption of benzohydroxamic acid on a rutile TiO2(110)-(1×1) single-crystal surface. We compare evaporation in ultrahigh vacuum with deposition from ethanol and acetonitrile solutions. Furthermore, we carried out density functional theory calculations to support the assignment of adsorbates. Several species appear on the surface, which are most evident in the N 1s region. The low-coverage species can be explained as originating from a hydroxamate, and decomposed species related to oxygen vacancies or defects. Identification of the high-coverage species, however, remains elusive, and several possibilities are discussed.

Authors with CRIS profile

Julia Köbl Lehrstuhl für Physikalische Chemie II Lisa-Marie Augustin Lehrstuhl für Theoretische Chemie Elmar Kataev Lehrstuhl für Physikalische Chemie II Norbert Jux Naturwissenschaftliche Fakultät Ole Lytken Lehrstuhl für Physikalische Chemie II Hans-Peter Steinrück Lehrstuhl für Physikalische Chemie II

Involved external institutions

Universidad de Buenos Aires (UBA) / University of Buenos Aires AR Argentina (AR) Elettra Sincrotrone Trieste S.C.p.A. IT Italy (IT) Univerzita Karlova v Praze / Charles University in Prague CZ Czech Republic (CZ) Universidad Nacional del Sur AR Argentina (AR)

How to cite

APA:

Köbl, J., Fernández, C.C., Augustin, L.-M., Kataev, E., Franchi, S., Tsud, N.,... Steinrück, H.-P. (2022). Benzohydroxamic acid on rutile TiO2(110)-(1×1)– a comparison of ultrahigh-vacuum evaporation with deposition from solution. Surface Science, 716. https://doi.org/10.1016/j.susc.2021.121955

MLA:

Köbl, Julia, et al. "Benzohydroxamic acid on rutile TiO2(110)-(1×1)– a comparison of ultrahigh-vacuum evaporation with deposition from solution." Surface Science 716 (2022).

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