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The Influence of Rutile Particles on Photo-induced Activity of the Sol-gel TiO2/ITO Photo-anode

SYSNO ASEP	0451540
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The Influence of Rutile Particles on Photo-induced Activity of the Sol-gel TiO2/ITO Photo-anode
Author(s)	Morozová, Magdalena (UCHP-M)_{RID, SAI} Dytrych, Pavel (UCHP-M)_{RID, ORCID, SAI} Spáčilová, Lucie (UCHP-M)_{RID, SAI} Šolcová, Olga (UCHP-M)_{RID, ORCID, SAI}
Source Title	Research on Chemical Intermediates. - : Springer - ISSN 0922-6168 Roč. 41, č. 12 (2015), s. 9307-9318
Number of pages	12 s.
Action	Pannonian Symposium on Catalysis /12./
Event date	16.09.2014-20.09.2014
VEvent location	Castle Trest
Country	CZ - Czech Republic
Event type	EUR
Language	eng - English
Country	NL - Netherlands
Keywords	titanium dioxide ; anatase ; rutile
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
R&D Projects	TA01020804 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000365743300013
EID SCOPUS	84953636413
DOI	10.1007/s11164-015-2006-5
Annotation	The rutile effect on the structural and photo-electrochemical properties and the photoinduced activity was studied. The thin TiO2 layers were prepared by the sol-gel method using a reverse micelles system as a molecular template and deposited on the conductive ITO substrate by a dip-coating technique. Pure anatase or mixed anatase/rutile phase were obtained during the calcination step as a result of the selected temperature. The crystallographic structure was determined by Raman spectroscopy and XRD analysis. The positive influence of the presence rutile particles in the thin layer on the photo-induced properties was verified. It was found that the mixed crystallographic phase of anatase and rutile can exhibit a much higher photoinduced activity than pure anatase or the pure rutile form. The reason is that the excited electrons can easily transfer from the anatase surface states to rutile as well as from the anatase conduction band to rutile, which improves the electron-transfer rate. The electron transport between connected anatase and rutile particles can support the photo-excited charge separation and thus reduce the recombination rate.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2016

Number of the records: 1