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Spontaneous and Photoinduced Conversion of CO2 on TiO2 Anatase
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SYSNO ASEP 0506996 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Spontaneous and Photoinduced Conversion of CO2 on TiO2 Anatase Author(s) Civiš, Svatopluk (UFCH-W) RID, ORCID, SAI
Ferus, Martin (UFCH-W) ORCID, RIDArticle number 7193632 Source Title 17TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON). - New York : IEEE, 2015 - ISSN 2162-7339 - ISBN 978-1-4673-7880-2 Pages (2015) Series International Conference on Transparent Optical Networks-ICTON Number of pages 5 s. Publication form Print - P Action International Conference on Transparent Optical Networks (ICTON 2015) /17./ Event date 05.07.2015 - 09.07.2015 VEvent location Budapest Country HU - Hungary Event type WRD Language eng - English Country US - United States Keywords surface defect ; 1st step ; laser ; spectroscopy ; decomposition ; nanocrystal ; formamide ; structure and reactions of adsorbates Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry Institutional support UFCH-W - RVO:61388955 UT WOS 000380506700347 EID SCOPUS 84940931343 DOI 10.1109/ICTON.2015.7193632 Annotation Spontaneous isotopic exchange of oxygen atoms between gaseous (CO2)-O-18 and (TiO2)-O-16 nanoparticles has been studied using high-resolution Fourier transform infrared absorption and first principles density functional theory calculations. The rate of formation of gaseous (CO2)-O-16 is found to be highly dependent on the nature of the titania sample, growing with increasing calcination temperature for both amorphous and crystalline nanoparticles. This is attributed to an increase in the population of oxygen atom defects and for uncoordinated sites at higher calcination temperatures. Additional support for the experimental observations is provided by calculations of the activation barriers for oxygen exchange on crystalline anatase and on a (TiO2)(10) cluster. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2020
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