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Catalytic and photocatalytic processes on 18O-labeled TiO2

SYSNO ASEP	0369217
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Catalytic and photocatalytic processes on 18O-labeled TiO2
Author(s)	Kavan, Ladislav (UFCH-W)_{RID, ORCID} Zukalová, Markéta (UFCH-W)_{RID, SAI, ORCID} Ferus, Martin (UFCH-W)_{ORCID, RID} Kürti, J. (HU) Koltai, J. (HU) Civiš, Svatopluk (UFCH-W)_{RID, ORCID, SAI}
Source Title	Sborník příspěvků. 5. Seminář výzkumného centra NANOPIN. Nanomateriály a fotokatalýza. - Praha : VŠCHT Praha, 2011 / Krýsa J. ; Klusoň P. - ISBN 978-80-7080-780-4
Pages	s. 11-13
Number of pages	3 s.
Action	Seminář výzkumného centra NANOPIN. Nanomateriály a fotokatalýza /5./
Event date	20.06.2011-23.06.2011
VEvent location	Hnanice
Country	CZ - Czech Republic
Event type	WRD
Language	eng - English
Country	CZ - Czech Republic
Keywords	TiO2 ; photocatalysis
Subject RIV	CG - Electrochemistry
R&D Projects	1M0577 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
Annotation	18O-isotope labelled titania (anatase, rutile) was synthesized. The products were characterized by Raman spectra together with their quantum chemical modelling. The interaction with carbon dioxide was investigated using high-resolution FTIR spectroscopy, in dark and upon UV-excitation. The oxygen isotope exchange at the Ti18O2/C16O2 interface was elucidated. The C18O2 was formed as the dominating final product with a minor content of C16O18O. The rate of oxygen-isotope exchange is highly sensitive to the conditions of the titania pretreatment. The vacuum-annealed Ti18O2 at 450 C exhibited a very high spontaneous oxygen exchange activity with gaseous C16O2. A mechanism for the 18O/16O exchange process is discussed at the molecular level. The photocatalytic formation of methane, acetylene and C16O released from the Ti18O2 surface was triggered by an XeCl excimer laser irradiation.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2012

Number of the records: 1