Intrinsic defects on a TiO2(110)(1×1) surface and their reaction with oxygen: a scanning tunneling microscopy study

Diebold, Ulrike; Lehman, Jeremiah; Mahmoud, Talib; Kühn, Markus; Leonardelli, G.; Hebenstreit, Wilhelm; Schmid, Michael; Варга, П.

doi:10.1016/s0039-6028(98)00356-2

Cited by 371 publications

(353 citation statements)

References 40 publications

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“…The < n 1 1 > step edge has a characteristic adsorption site that is demarcated by ellipse C in Fig. 1(b) and the inset figure, which consists of two oxygen atoms: a bridging oxygen (OL) on the lower terrace and an oxygen (OU) of the upper terrace [2,21]. Figure 2(b) shows the manner in which we can reproduce observed spectra well when we put Ni atoms on this site.…”

Section: Methodsmentioning

confidence: 87%

“…3. We estimated the density of the adsorption site to 2-3 x 10 13 sites / cm 2 based on the reported STM picture [2,21]. This value is larger than the Ni coverage studied here.…”

Section: Methodsmentioning

confidence: 94%

“…Figure 1 (b) shows that TiO2(110) has step edges, most of which run parallel to <001> or < n 1 1 > (n=1,2,3 ….) [2,21]. Two structures have been proposed for the step running along the <001> step.…”

Section: Methodsmentioning

confidence: 99%

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Structure of low coverage Ni atoms on the TiO2(110) surface – Polarization dependent total-reflection fluorescence EXAFS study

Koike

Ijima

Chun

et al. 2006

Chemical Physics Letters

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The structure of low coverage Ni atoms on the TiO2(110) surface was studied using polarization dependent EXAFS. We found that Ni atoms interacted with oxygen atoms at the n 1 1 step edges, where atomically dispersed Ni species were found with Ni-O distances at 0.199 ± 0.002 nm and 0.204 ± 0.003 nm in parallel and perpendicular directions to the Koike et. al. 2 TiO2(110) surface, respectively. The location corresponded to the virtual Ti site if the next TiO2 layer was created on the topmost TiO2 surface. The Ni location is mainly determined by the dangling bond directions of the surface oxygen atoms.

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Section: Methodsmentioning

confidence: 87%

“…3. We estimated the density of the adsorption site to 2-3 x 10 13 sites / cm 2 based on the reported STM picture [2,21]. This value is larger than the Ni coverage studied here.…”

Section: Methodsmentioning

confidence: 94%

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Structure of low coverage Ni atoms on the TiO2(110) surface – Polarization dependent total-reflection fluorescence EXAFS study

Koike

Ijima

Chun

et al. 2006

Chemical Physics Letters

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“…A similar observation on bare rutile (110) has been made, for example, by Diebold and co-workers. 39 Considering the contrast inversion, we find that the center of the porphyrins is now shifted to a titanium row. In this configuration, the carboxyl groups can easily anchor to surface titanium atoms.…”

Section: A Adsorption Modes Of Zndcpp and Zntppmentioning

confidence: 90%

“…Therefore, the oxygen rows in Figure 2(a), which are marked with dashed lines, appear lower in height than the titanium atoms. 39 This type of the rows can also be assigned by considering that the defects such as hydrogen adatoms or J. Chem. Phys.…”

Section: A Adsorption Modes Of Zndcpp and Zntppmentioning

confidence: 99%

Thermally induced anchoring of a zinc-carboxyphenylporphyrin on rutile TiO2 (110)

Jöhr

Hinaut

Pawlak

et al. 2017

The Journal of Chemical Physics

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Functionalization of surfaces has become of high interest for a wealth of applications such as sensors, hybrid photovoltaics, catalysis, and molecular electronics. Thereby molecule-surface interactions are of crucial importance for the understanding of interface properties. An especially relevant point is the anchoring of molecules to surfaces. In this work, we analyze this process for a zinc-porphyrin equipped with carboxylic acid anchoring groups on rutile TiO2 (110) using scanning probe microscopy. After evaporation, the porphyrins are not covalently bound to the surface. Upon annealing, the carboxylic acid anchors undergo deprotonation and bind to surface titanium atoms. The formation of covalent bonds is evident from the changed stability of the molecule on the surface as well as the adsorption configuration. Annealed porphyrins are rotated by 45° and adopt another adsorption site. The influence of binding on electronic coupling with the surface is investigated using photoelectron spectroscopy. The observed shifts of Zn 2p and N 1s levels to higher binding energies indicate charging of the porphyrin core, which is accompanied by a deformation of the macrocycle due to a strong interaction with the surface.

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In Situ STM Studies of Model Catalysts

Yang

Goodman

2009

Scanning Tunneling Microscopy in Surface Science

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Intrinsic defects on a TiO2(110)(1×1) surface and their reaction with oxygen: a scanning tunneling microscopy study

Cited by 371 publications

References 40 publications

Structure of low coverage Ni atoms on the TiO2(110) surface – Polarization dependent total-reflection fluorescence EXAFS study

Structure of low coverage Ni atoms on the TiO2(110) surface – Polarization dependent total-reflection fluorescence EXAFS study

Thermally induced anchoring of a zinc-carboxyphenylporphyrin on rutile TiO2 (110)

In Situ STM Studies of Model Catalysts

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