An Experimental Investigation of the Adsorption of a Phosphonic Acid on the Anatase TiO2(101) Surface
(2016) In Journal of Physical Chemistry C 120(3). p.1693-1700- Abstract
- A combination of synchrotron radiation photoelectron spectroscopy and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy has been used to study the adsorption of phenylphosphonic acid (PPA) on anatase TiO2(101) single crystal at coverages of 0.15 monolayer (ML) and 0.85 ML. The photoelectron spectroscopy data suggest that at 0.15 ML coverage PPA adsorbs in a bidentate geometry following deprotonation of both phosphonate hydroxyl groups, leaving the P-O group unbound. At 0.85 ML there is a shift to a mixed bidentate/monodentate binding mode. The carbon K-edge NEXAFS spectra were recorded at two azimuths. Our calculations show that for PPA on anatase TiO2(101) the phenyl ring is oriented 65 +/- 4 degrees away from the surface... (More)
- A combination of synchrotron radiation photoelectron spectroscopy and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy has been used to study the adsorption of phenylphosphonic acid (PPA) on anatase TiO2(101) single crystal at coverages of 0.15 monolayer (ML) and 0.85 ML. The photoelectron spectroscopy data suggest that at 0.15 ML coverage PPA adsorbs in a bidentate geometry following deprotonation of both phosphonate hydroxyl groups, leaving the P-O group unbound. At 0.85 ML there is a shift to a mixed bidentate/monodentate binding mode. The carbon K-edge NEXAFS spectra were recorded at two azimuths. Our calculations show that for PPA on anatase TiO2(101) the phenyl ring is oriented 65 +/- 4 degrees away from the surface plane with an azimuthal twist of 57 +/- 11 degrees away from the [101] azimuth. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8728650
- author
- Wagstaffe, Michael ; Thomas, Andrew G. ; Jackman, Mark. J. ; Torres-Molina, Maria ; Syres, Karen L. and Handrup, Karsten LU
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physical Chemistry C
- volume
- 120
- issue
- 3
- pages
- 1693 - 1700
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000369116100036
- scopus:84956687878
- ISSN
- 1932-7447
- DOI
- 10.1021/acs.jpcc.5b11258
- language
- English
- LU publication?
- yes
- id
- eda2360b-5f77-4119-9854-b8de1716fe46 (old id 8728650)
- date added to LUP
- 2016-04-01 09:49:06
- date last changed
- 2025-04-04 14:03:39
@article{eda2360b-5f77-4119-9854-b8de1716fe46,
abstract = {{A combination of synchrotron radiation photoelectron spectroscopy and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy has been used to study the adsorption of phenylphosphonic acid (PPA) on anatase TiO2(101) single crystal at coverages of 0.15 monolayer (ML) and 0.85 ML. The photoelectron spectroscopy data suggest that at 0.15 ML coverage PPA adsorbs in a bidentate geometry following deprotonation of both phosphonate hydroxyl groups, leaving the P-O group unbound. At 0.85 ML there is a shift to a mixed bidentate/monodentate binding mode. The carbon K-edge NEXAFS spectra were recorded at two azimuths. Our calculations show that for PPA on anatase TiO2(101) the phenyl ring is oriented 65 +/- 4 degrees away from the surface plane with an azimuthal twist of 57 +/- 11 degrees away from the [101] azimuth.}},
author = {{Wagstaffe, Michael and Thomas, Andrew G. and Jackman, Mark. J. and Torres-Molina, Maria and Syres, Karen L. and Handrup, Karsten}},
issn = {{1932-7447}},
language = {{eng}},
number = {{3}},
pages = {{1693--1700}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Journal of Physical Chemistry C}},
title = {{An Experimental Investigation of the Adsorption of a Phosphonic Acid on the Anatase TiO2(101) Surface}},
url = {{http://dx.doi.org/10.1021/acs.jpcc.5b11258}},
doi = {{10.1021/acs.jpcc.5b11258}},
volume = {{120}},
year = {{2016}},
}