This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1039/C5NR08420B in citations.
Please use the identifier: http://hdl.handle.net/2128/12281 in citations.
Tuning the surface electronic structure of a Pt $_{3}$ Ti(111) electro catalyst
Tuning the surface electronic structure of a Pt $_{3}$ Ti(111) electro catalyst
Increasing the efficiency and stability of bimetallic electro catalysts is particularly important for future clean energy technologies. However, the relationship between the surface termination of these alloys and their catalytic activity is poorly understood. Therefore, we report on fundamental UHV...
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Personal Name(s): | Paßens, M. |
---|---|
Caciuc, V. / Atodiresei, N. (Corresponding author) / Moors, M. / Blügel, S. / Waser, R. / Karthäuser, S. | |
Contributing Institute: |
Elektronische Materialien; PGI-7 Quanten-Theorie der Materialien; IAS-1 |
Published in: | Nanoscale, 8 (2016) 29, S. 13924 - 13933 |
Imprint: |
Cambridge
RSC Publ.
2016
|
DOI: |
10.1039/C5NR08420B |
Document Type: |
Journal Article |
Research Program: |
Controlling Collective States |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/12281 in citations.
Increasing the efficiency and stability of bimetallic electro catalysts is particularly important for future clean energy technologies. However, the relationship between the surface termination of these alloys and their catalytic activity is poorly understood. Therefore, we report on fundamental UHV-SPM, LEED, and DFT calculations of the Pt3Ti(111) single crystal surface. Using voltage dependent imaging the surface termination of Pt3Ti(111) was studied with atomic resolution. Combining these images with simulated STM maps based on ab initio DFT calculations allowed us to identify the three upper layers of the Pt3Ti(111) single crystal and their influence upon the surface electronic structure. Our results show that small changes in the composition of the second and third atomic layer are of significant influence upon the surface electronic structure of the Pt3Ti electro catalyst. Furthermore, we provide relevant insights into the dependence of the surface termination on the preparation conditions. |