Structure sensitive photocatalytic reduction of nitroarenes over TiO 2

Structure sensitive photocatalytic reduction of nitroarenes over TiO 2

Abstract It is a subject of exploration whether the phase pure anatase or rutile TiO2 or the band alignment due to the heterojunctions in the two polymorphs of TiO2 plays the determining role in efficacy of a photocatalytic reaction. In this work, the phase pure anatase and rutile TiO2 have been exp...

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Main Authors: Swapna Challagulla, Kartick Tarafder, Ramakrishnan Ganesan, Sounak Roy
Format: Article
Language:English
Published: Nature Publishing Group 2017-08-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-017-08599-2
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spelling doaj-6da03e0a1cf24e8ab4eb7d04e1ff1e2b2020-12-08T03:06:27ZengNature Publishing GroupScientific Reports2045-23222017-08-017111110.1038/s41598-017-08599-2Structure sensitive photocatalytic reduction of nitroarenes over TiO 2Swapna Challagulla0Kartick Tarafder1Ramakrishnan Ganesan2Sounak Roy3Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad CampusDepartment of Physics, National Institute of Technology Karnataka, SurathkalDepartment of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad CampusDepartment of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad CampusAbstract It is a subject of exploration whether the phase pure anatase or rutile TiO2 or the band alignment due to the heterojunctions in the two polymorphs of TiO2 plays the determining role in efficacy of a photocatalytic reaction. In this work, the phase pure anatase and rutile TiO2 have been explored for photocatalytic nitroarenes reduction to understand the role of surface structures and band alignment towards the reduction mechanism. The conduction band of synthesized anatase TiO2 has been found to be more populated with electrons of higher energy than that of synthesized rutile. This has given the anatase an edge towards photocatalytic reduction of nitroarenes over rutile TiO2. The other factors like adsorption of the reactants and the proton generation did not play any decisive role in catalytic efficacy.https://doi.org/10.1038/s41598-017-08599-2
collection DOAJ
language English
format Article
sources DOAJ
author Swapna Challagulla
Kartick Tarafder
Ramakrishnan Ganesan
Sounak Roy
spellingShingle Swapna Challagulla
Kartick Tarafder
Ramakrishnan Ganesan
Sounak Roy
Structure sensitive photocatalytic reduction of nitroarenes over TiO 2
Scientific Reports
author_facet Swapna Challagulla
Kartick Tarafder
Ramakrishnan Ganesan
Sounak Roy
author_sort Swapna Challagulla
title Structure sensitive photocatalytic reduction of nitroarenes over TiO 2
title_short Structure sensitive photocatalytic reduction of nitroarenes over TiO 2
title_full Structure sensitive photocatalytic reduction of nitroarenes over TiO 2
title_fullStr Structure sensitive photocatalytic reduction of nitroarenes over TiO 2
title_full_unstemmed Structure sensitive photocatalytic reduction of nitroarenes over TiO 2
title_sort structure sensitive photocatalytic reduction of nitroarenes over tio 2
publisher Nature Publishing Group
series Scientific Reports
issn 2045-2322
publishDate 2017-08-01
description Abstract It is a subject of exploration whether the phase pure anatase or rutile TiO2 or the band alignment due to the heterojunctions in the two polymorphs of TiO2 plays the determining role in efficacy of a photocatalytic reaction. In this work, the phase pure anatase and rutile TiO2 have been explored for photocatalytic nitroarenes reduction to understand the role of surface structures and band alignment towards the reduction mechanism. The conduction band of synthesized anatase TiO2 has been found to be more populated with electrons of higher energy than that of synthesized rutile. This has given the anatase an edge towards photocatalytic reduction of nitroarenes over rutile TiO2. The other factors like adsorption of the reactants and the proton generation did not play any decisive role in catalytic efficacy.
url https://doi.org/10.1038/s41598-017-08599-2
work_keys_str_mv AT swapnachallagulla structuresensitivephotocatalyticreductionofnitroarenesovertio2
AT karticktarafder structuresensitivephotocatalyticreductionofnitroarenesovertio2
AT ramakrishnanganesan structuresensitivephotocatalyticreductionofnitroarenesovertio2
AT sounakroy structuresensitivephotocatalyticreductionofnitroarenesovertio2
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