---
_id: '20945'
abstract:
- lang: eng
  text: Calcium-Silicate-Hydrates (C-S-H) are the main binding phases in most concrete
    which is the primarily used composite construction material in the world. However,
    a big lack is cleaving between the actual knowledge about C-S-H, compared to what
    could be reached using state-of-the-art technologies of modern research. In this
    article, the formation of a C-S-H phase on a native oxide covered silicon wafer
    is investigated by means of in-situ attenuated total reflection infrared (ATR-IR)
    and ex-situ surface-enhanced Raman spectroscopy (SERS). The total thickness of
    the C-S-H phase is determined by X-ray photoelectron spectroscopy (XPS) to be
    3 nm. The formation appears to be reversible depending on the environment pH value
    and can be performed at room temperature. Based on density functional theory (DFT)
    calculations, it is shown that the C-S-H phase in the presence of water will change
    its chemical composition in order to reach the thermodynamic ground state of the
    system. This change is achieved by a metal-proton exchange reaction. The stoichiometry
    of these metal-proton exchange reactions is nearly independent of the environment
    pH value. Electrokinetic measurements yield isoelectric points of 2.0 and 2.6
    for the native oxide covered silicon wafer (SiO2) and the C-S-H phase. This is
    consistent with a predominance of Si-O sites at the C-S-H/water interface. (C)
    2013 Elsevier B. V. All rights reserved.
author:
- first_name: Christoph
  full_name: Ebbert, Christoph
  id: '7266'
  last_name: Ebbert
- first_name: Guido
  full_name: Grundmeier, Guido
  id: '194'
  last_name: Grundmeier
- first_name: Nadine
  full_name: Buitkamp, Nadine
  id: '1449'
  last_name: Buitkamp
- first_name: Alexander
  full_name: Kroeger, Alexander
  last_name: Kroeger
- first_name: Florian
  full_name: Messerschmidt, Florian
  last_name: Messerschmidt
- first_name: Peter
  full_name: Thissen, Peter
  last_name: Thissen
citation:
  ama: Ebbert C, Grundmeier G, Buitkamp N, Kroeger A, Messerschmidt F, Thissen P.
    Toward a microscopic understanding of the calcium-silicate-hydrates/water interface.
    <i>APPLIED SURFACE SCIENCE</i>. 2014;290:207-214. doi:<a href="https://doi.org/10.1016/j.apsusc.2013.11.045">10.1016/j.apsusc.2013.11.045</a>
  apa: Ebbert, C., Grundmeier, G., Buitkamp, N., Kroeger, A., Messerschmidt, F., &#38;
    Thissen, P. (2014). Toward a microscopic understanding of the calcium-silicate-hydrates/water
    interface. <i>APPLIED SURFACE SCIENCE</i>, <i>290</i>, 207–214. <a href="https://doi.org/10.1016/j.apsusc.2013.11.045">https://doi.org/10.1016/j.apsusc.2013.11.045</a>
  bibtex: '@article{Ebbert_Grundmeier_Buitkamp_Kroeger_Messerschmidt_Thissen_2014,
    title={Toward a microscopic understanding of the calcium-silicate-hydrates/water
    interface}, volume={290}, DOI={<a href="https://doi.org/10.1016/j.apsusc.2013.11.045">10.1016/j.apsusc.2013.11.045</a>},
    journal={APPLIED SURFACE SCIENCE}, author={Ebbert, Christoph and Grundmeier, Guido
    and Buitkamp, Nadine and Kroeger, Alexander and Messerschmidt, Florian and Thissen,
    Peter}, year={2014}, pages={207–214} }'
  chicago: 'Ebbert, Christoph, Guido Grundmeier, Nadine Buitkamp, Alexander Kroeger,
    Florian Messerschmidt, and Peter Thissen. “Toward a Microscopic Understanding
    of the Calcium-Silicate-Hydrates/Water Interface.” <i>APPLIED SURFACE SCIENCE</i>
    290 (2014): 207–14. <a href="https://doi.org/10.1016/j.apsusc.2013.11.045">https://doi.org/10.1016/j.apsusc.2013.11.045</a>.'
  ieee: 'C. Ebbert, G. Grundmeier, N. Buitkamp, A. Kroeger, F. Messerschmidt, and
    P. Thissen, “Toward a microscopic understanding of the calcium-silicate-hydrates/water
    interface,” <i>APPLIED SURFACE SCIENCE</i>, vol. 290, pp. 207–214, 2014, doi:
    <a href="https://doi.org/10.1016/j.apsusc.2013.11.045">10.1016/j.apsusc.2013.11.045</a>.'
  mla: Ebbert, Christoph, et al. “Toward a Microscopic Understanding of the Calcium-Silicate-Hydrates/Water
    Interface.” <i>APPLIED SURFACE SCIENCE</i>, vol. 290, 2014, pp. 207–14, doi:<a
    href="https://doi.org/10.1016/j.apsusc.2013.11.045">10.1016/j.apsusc.2013.11.045</a>.
  short: C. Ebbert, G. Grundmeier, N. Buitkamp, A. Kroeger, F. Messerschmidt, P. Thissen,
    APPLIED SURFACE SCIENCE 290 (2014) 207–214.
date_created: 2021-01-13T10:12:51Z
date_updated: 2025-11-18T12:05:39Z
department:
- _id: '35'
- _id: '302'
- _id: '321'
doi: 10.1016/j.apsusc.2013.11.045
external_id:
  isi:
  - '000329060100032'
intvolume: '       290'
isi: '1'
language:
- iso: eng
page: 207-214
publication: APPLIED SURFACE SCIENCE
publication_identifier:
  eissn:
  - 1873-5584
  issn:
  - 0169-4332
publication_status: published
quality_controlled: '1'
status: public
title: Toward a microscopic understanding of the calcium-silicate-hydrates/water interface
type: journal_article
user_id: '7266'
volume: 290
year: '2014'
...
---
_id: '20947'
abstract:
- lang: eng
  text: Alkylphosphonic acids of different alkyl chain lengths were adsorbed on electrochemically
    polished NiTi surfaces from ethanolic solutions. The electropolishing process
    led to passive films mainly composed of Ti-oxyhydroxide. The surface showed nanoscopic
    etching pits with a depths of about 2 nm and a diameter of about 20 nm. The interfacial
    binding mechanism of the phosphonic acid group to the oxyhydroxide surface and
    the ordering of the monolayer were spectroscopically analysed by means of infrared
    reflection absorption FTIR-spectroscopy with (PM-IRRAS) and without (IRRAS) photoelastic
    modulation. The comparison of IRRAS and PM-IRRAS data of the long chain octadecylphosphonic
    acid monolayer proved that the binding mechanism of the phosphonic acid group
    to the oxyhydroxide surface is based on a mono-or bidentate bond, which is not
    stable in the presence of high water activities. An alkyl chain length of 17 CH2
    groups is required for the formation of self-assembled monolayers, which are stable
    in aqueous environments. These long chain aliphatic organophosphonic acid monolayers
    were shown to inhibit anodic and cathodic surface reactions. (C) 2010 Elsevier
    B.V. All rights reserved.
author:
- first_name: M.
  full_name: Maxisch, M.
  last_name: Maxisch
- first_name: Christoph
  full_name: Ebbert, Christoph
  id: '7266'
  last_name: Ebbert
- first_name: B.
  full_name: Torun, B.
  last_name: Torun
- first_name: N.
  full_name: Fink, N.
  last_name: Fink
- first_name: T.
  full_name: de los Arcos, T.
  last_name: de los Arcos
- first_name: J.
  full_name: Lackmann, J.
  last_name: Lackmann
- first_name: H. J.
  full_name: Maier, H. J.
  last_name: Maier
- first_name: Guido
  full_name: Grundmeier, Guido
  id: '194'
  last_name: Grundmeier
citation:
  ama: Maxisch M, Ebbert C, Torun B, et al. PM-IRRAS studies of the adsorption and
    stability of organophosphonate monolayers on passivated NiTi surfaces. <i>APPLIED
    SURFACE SCIENCE</i>. 2011;257(6):2011-2018. doi:<a href="https://doi.org/10.1016/j.apsusc.2010.09.044">10.1016/j.apsusc.2010.09.044</a>
  apa: Maxisch, M., Ebbert, C., Torun, B., Fink, N., de los Arcos, T., Lackmann, J.,
    … Grundmeier, G. (2011). PM-IRRAS studies of the adsorption and stability of organophosphonate
    monolayers on passivated NiTi surfaces. <i>APPLIED SURFACE SCIENCE</i>, <i>257</i>(6),
    2011–2018. <a href="https://doi.org/10.1016/j.apsusc.2010.09.044">https://doi.org/10.1016/j.apsusc.2010.09.044</a>
  bibtex: '@article{Maxisch_Ebbert_Torun_Fink_de los Arcos_Lackmann_Maier_Grundmeier_2011,
    title={PM-IRRAS studies of the adsorption and stability of organophosphonate monolayers
    on passivated NiTi surfaces}, volume={257}, DOI={<a href="https://doi.org/10.1016/j.apsusc.2010.09.044">10.1016/j.apsusc.2010.09.044</a>},
    number={6}, journal={APPLIED SURFACE SCIENCE}, author={Maxisch, M. and Ebbert,
    Christoph and Torun, B. and Fink, N. and de los Arcos, T. and Lackmann, J. and
    Maier, H. J. and Grundmeier, Guido}, year={2011}, pages={2011–2018} }'
  chicago: 'Maxisch, M., Christoph Ebbert, B. Torun, N. Fink, T. de los Arcos, J.
    Lackmann, H. J. Maier, and Guido Grundmeier. “PM-IRRAS Studies of the Adsorption
    and Stability of Organophosphonate Monolayers on Passivated NiTi Surfaces.” <i>APPLIED
    SURFACE SCIENCE</i> 257, no. 6 (2011): 2011–18. <a href="https://doi.org/10.1016/j.apsusc.2010.09.044">https://doi.org/10.1016/j.apsusc.2010.09.044</a>.'
  ieee: M. Maxisch <i>et al.</i>, “PM-IRRAS studies of the adsorption and stability
    of organophosphonate monolayers on passivated NiTi surfaces,” <i>APPLIED SURFACE
    SCIENCE</i>, vol. 257, no. 6, pp. 2011–2018, 2011.
  mla: Maxisch, M., et al. “PM-IRRAS Studies of the Adsorption and Stability of Organophosphonate
    Monolayers on Passivated NiTi Surfaces.” <i>APPLIED SURFACE SCIENCE</i>, vol.
    257, no. 6, 2011, pp. 2011–18, doi:<a href="https://doi.org/10.1016/j.apsusc.2010.09.044">10.1016/j.apsusc.2010.09.044</a>.
  short: M. Maxisch, C. Ebbert, B. Torun, N. Fink, T. de los Arcos, J. Lackmann, H.J.
    Maier, G. Grundmeier, APPLIED SURFACE SCIENCE 257 (2011) 2011–2018.
date_created: 2021-01-13T10:12:53Z
date_updated: 2022-01-06T06:54:41Z
department:
- _id: '35'
- _id: '302'
- _id: '321'
doi: 10.1016/j.apsusc.2010.09.044
external_id:
  isi:
  - '000285408700035'
intvolume: '       257'
isi: '1'
issue: '6'
language:
- iso: eng
page: 2011-2018
publication: APPLIED SURFACE SCIENCE
publication_identifier:
  eissn:
  - 1873-5584
  issn:
  - 0169-4332
publication_status: published
quality_controlled: '1'
status: public
title: PM-IRRAS studies of the adsorption and stability of organophosphonate monolayers
  on passivated NiTi surfaces
type: journal_article
user_id: '7266'
volume: 257
year: '2011'
...