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Original title:
Electrochemical and spectroelectrochemical study of nanocrystalline TiO2 anatase with exposed (001) faces
Authors: Lásková, Barbora ; Zukalová, Markéta ; Bouša, Milan ; Kavan, Ladislav ; Liska, P. ; Grätzel, M.
Document type: Papers
Conference/Event: New trends in application of photo and electro catalysis. The Czech-Austrian workshop /4./, Hnanice (CZ), 2011-12-05 / 2011-12-07
Year: 2012
Language: eng
Abstract: The electrochemical and spectroelectrochemical behavior ot TiO2 anatase with a predominant (001) face was studied and compared to a reference anatase material with dominating (101) face. The electrochemical measurements indicate that Li-ion insertion/extraction is facilitated for TiO2 anatase with (001) faces as compared to (101) one. The performance of both different crystal morphologies as a photoanode material in DSC (dye sensitized solar cell) was tested too. The (001) face adsorbed smaller amount of the used dye sensitizer (C101) but provides larger open circuit voltage (Uoc) of the solar cell. The different band energetics of both particular morphologies was suggested to be the reason for the voltage enhancement of the device employing (001) anatase. To prove our hypothesis and determine their flatband potential, a spectroelectrochemical study of transparent films of nanocrystalline (001) and (101) anatase on coaducting glass was carried out. UV/Vis spectra were measured at potentials between 0 and -1.4V vs SCE and confirmed the negative shift of flatband potential for (001) anatase as compared to (101) one.
Keywords: flatband potential; titanium dioxide
Project no.: CEZ:AV0Z40400503 (CEP), IAA400400804 (CEP), KAN200100801 (CEP), LC510 (CEP)
Funding provider: GA AV ČR, GA AV ČR, GA MŠk
Host item entry: New trends in application of photo and electro catalysis. Proceedings of the 4th Czech-Austrian workshop, ISBN 978-80-7080-809-2
Institution: J. Heyrovsky Institute of Physical Chemistry AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0222063
Permalink: http://www.nusl.cz/ntk/nusl-155365
The record appears in these collections:
Research > Institutes ASCR > J. Heyrovsky Institute of Physical Chemistry
Conference materials > Papers
Authors: Lásková, Barbora ; Zukalová, Markéta ; Bouša, Milan ; Kavan, Ladislav ; Liska, P. ; Grätzel, M.
Document type: Papers
Conference/Event: New trends in application of photo and electro catalysis. The Czech-Austrian workshop /4./, Hnanice (CZ), 2011-12-05 / 2011-12-07
Year: 2012
Language: eng
Abstract: The electrochemical and spectroelectrochemical behavior ot TiO2 anatase with a predominant (001) face was studied and compared to a reference anatase material with dominating (101) face. The electrochemical measurements indicate that Li-ion insertion/extraction is facilitated for TiO2 anatase with (001) faces as compared to (101) one. The performance of both different crystal morphologies as a photoanode material in DSC (dye sensitized solar cell) was tested too. The (001) face adsorbed smaller amount of the used dye sensitizer (C101) but provides larger open circuit voltage (Uoc) of the solar cell. The different band energetics of both particular morphologies was suggested to be the reason for the voltage enhancement of the device employing (001) anatase. To prove our hypothesis and determine their flatband potential, a spectroelectrochemical study of transparent films of nanocrystalline (001) and (101) anatase on coaducting glass was carried out. UV/Vis spectra were measured at potentials between 0 and -1.4V vs SCE and confirmed the negative shift of flatband potential for (001) anatase as compared to (101) one.
Keywords: flatband potential; titanium dioxide
Project no.: CEZ:AV0Z40400503 (CEP), IAA400400804 (CEP), KAN200100801 (CEP), LC510 (CEP)
Funding provider: GA AV ČR, GA AV ČR, GA MŠk
Host item entry: New trends in application of photo and electro catalysis. Proceedings of the 4th Czech-Austrian workshop, ISBN 978-80-7080-809-2
Institution: J. Heyrovsky Institute of Physical Chemistry AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0222063
Permalink: http://www.nusl.cz/ntk/nusl-155365
The record appears in these collections:
Research > Institutes ASCR > J. Heyrovsky Institute of Physical Chemistry
Conference materials > Papers
Record created 2013-06-27, last modified 2021-11-24