Long-Lasting Non-hydrogenated Dark Titanium Dioxide: Medium Vacuum Anneal for Enhanced Visible Activity of Modified Multiphase Photocatalysts

Lütfiye Y. Ozer; Harry Apostoleris; Florent Ravaux; Sergii I. Shylin; Fikret Mamedov; Andreas Lindblad; Fredrik O.L. Johansson; Matteo Chiesa; S. Jacinto; Giovanni Palmisano

doi:10.1002/cctc.201800097

Long-Lasting Non-hydrogenated Dark Titanium Dioxide: Medium Vacuum Anneal for Enhanced Visible Activity of Modified Multiphase Photocatalysts

Lütfiye Y. Ozer
, Harry Apostoleris
, Florent Ravaux
, Sergii I. Shylin
, Fikret Mamedov
, Andreas Lindblad
, Fredrik O.L. Johansson
, Matteo Chiesa
, S. Jacinto
, Giovanni Palmisano

Uppsala University
Institute of Physical Chemistry of the Polish Academy of Sciences

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Multiphase TiO₂ was stably modified by vacuum treatment for a dramatic improvement in visible-light absorption and photocatalytic reactivity. The samples were made of rutile-brookite, bare or N doped, and were grown on reduced graphene oxide. The stable introduction of Ti³⁺ species and oxygen vacancies resulting in mitigated electron–hole recombination was identified as the main responsible factor, along with a change in surface charges.

Original language	British English
Pages (from-to)	2949-2954
Number of pages	6
Journal	ChemCatChem
Volume	10
Issue number	14
DOIs	https://doi.org/10.1002/cctc.201800097
State	Published - 19 Jul 2018

Keywords

doping
photocatalysis
titanium
vacuum annealing
visible-light radiation

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title = "Long-Lasting Non-hydrogenated Dark Titanium Dioxide: Medium Vacuum Anneal for Enhanced Visible Activity of Modified Multiphase Photocatalysts",

abstract = "Multiphase TiO2 was stably modified by vacuum treatment for a dramatic improvement in visible-light absorption and photocatalytic reactivity. The samples were made of rutile-brookite, bare or N doped, and were grown on reduced graphene oxide. The stable introduction of Ti3+ species and oxygen vacancies resulting in mitigated electron–hole recombination was identified as the main responsible factor, along with a change in surface charges.",

keywords = "doping, photocatalysis, titanium, vacuum annealing, visible-light radiation",

author = "Ozer, \{L{\"u}tfiye Y.\} and Harry Apostoleris and Florent Ravaux and Shylin, \{Sergii I.\} and Fikret Mamedov and Andreas Lindblad and Johansson, \{Fredrik O.L.\} and Matteo Chiesa and S. Jacinto and Giovanni Palmisano",

note = "Funding Information: Oluwadamilola Pikuda is acknowledged for laboratory assistance. Tharalekshmy Anjana is gratefully acknowledged for her technical assistance with XRD. Abu Dhabi Education Council funded this study through the 2015 Award for Research Excellence (EX2016-000005). A.L. acknowledges support from the Swedish Research Council (Grant no. 2014–6463) and Marie Sklodowska Curie Actions (Cofund. Project INCA 600398). We acknowledge SOLEIL for providing synchrotron radiation facilities, and we would like to thank Denis Ceolin for assistance in using the GALAXIES beamline. Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2018",

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doi = "10.1002/cctc.201800097",

language = "British English",

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TY - JOUR

T1 - Long-Lasting Non-hydrogenated Dark Titanium Dioxide

T2 - Medium Vacuum Anneal for Enhanced Visible Activity of Modified Multiphase Photocatalysts

AU - Ozer, Lütfiye Y.

AU - Apostoleris, Harry

AU - Ravaux, Florent

AU - Shylin, Sergii I.

AU - Mamedov, Fikret

AU - Lindblad, Andreas

AU - Johansson, Fredrik O.L.

AU - Chiesa, Matteo

AU - Jacinto, S.

AU - Palmisano, Giovanni

N1 - Funding Information: Oluwadamilola Pikuda is acknowledged for laboratory assistance. Tharalekshmy Anjana is gratefully acknowledged for her technical assistance with XRD. Abu Dhabi Education Council funded this study through the 2015 Award for Research Excellence (EX2016-000005). A.L. acknowledges support from the Swedish Research Council (Grant no. 2014–6463) and Marie Sklodowska Curie Actions (Cofund. Project INCA 600398). We acknowledge SOLEIL for providing synchrotron radiation facilities, and we would like to thank Denis Ceolin for assistance in using the GALAXIES beamline. Publisher Copyright: © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/7/19

Y1 - 2018/7/19

N2 - Multiphase TiO2 was stably modified by vacuum treatment for a dramatic improvement in visible-light absorption and photocatalytic reactivity. The samples were made of rutile-brookite, bare or N doped, and were grown on reduced graphene oxide. The stable introduction of Ti3+ species and oxygen vacancies resulting in mitigated electron–hole recombination was identified as the main responsible factor, along with a change in surface charges.

AB - Multiphase TiO2 was stably modified by vacuum treatment for a dramatic improvement in visible-light absorption and photocatalytic reactivity. The samples were made of rutile-brookite, bare or N doped, and were grown on reduced graphene oxide. The stable introduction of Ti3+ species and oxygen vacancies resulting in mitigated electron–hole recombination was identified as the main responsible factor, along with a change in surface charges.

KW - doping

KW - photocatalysis

KW - titanium

KW - vacuum annealing

KW - visible-light radiation

UR - https://www.scopus.com/pages/publications/85050149766

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DO - 10.1002/cctc.201800097

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ER -

Long-Lasting Non-hydrogenated Dark Titanium Dioxide: Medium Vacuum Anneal for Enhanced Visible Activity of Modified Multiphase Photocatalysts

Abstract

Keywords

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