Resolving the controversy about the band alignment between rutile and anatase: The role of OH-/H+ adsorption
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00447847" target="_blank" >RIV/61388955:_____/15:00447847 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/acs.jpcc.5b04821" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.5b04821</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.5b04821" target="_blank" >10.1021/acs.jpcc.5b04821</a>
Alternative languages
Result language
angličtina
Original language name
Resolving the controversy about the band alignment between rutile and anatase: The role of OH-/H+ adsorption
Original language description
The synergic effect of mixing rutile (R) and anatase (A) crystals in photocatalysis is often attributed to a staggered alignment of the band structures, but it is widely disputed whether the conduction band edge of rutile or that of anatase is higher. Photoelectron spectroscopy (PES) supports the former, and flat-band potential (FBP) measurements the latter. Theoretical alignment of the bulk band structures as well as calculated offsets across actual interfaces support the PES data. The theoretical study presented here shows that the FBP data can be explained by taking into account the adsorption of OH and H+ ions in the electrolyte solution. We conclude that, in the case of nanopowders applied in photocatalysis, the dipole layer created by surface adsorption and the one at the R/A interface both have an influence on the alignment, and the end result may change from experiment to experiment.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CG - Electrochemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-07724S" target="_blank" >GA13-07724S: Materials engineering towards Innovative Graetzel solar cells</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry C
ISSN
1932-7447
e-ISSN
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Volume of the periodical
119
Issue of the periodical within the volume
38
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
21952-21958
UT code for WoS article
000361921600023
EID of the result in the Scopus database
2-s2.0-84942437055