Effect of surface doping of TiO2 powders with Fe ions on the structural, optical and photocatalytic properties of anatase and rutile

V. V. Shymanovska; T. A. Khalyavka; E. V. Manuilov; T. A. Gavrilko; A. Aho; V. V. Naumov; N. D. Shcherban

doi:10.1016/j.jpcs.2021.110308

Effect of surface doping of TiO₂ powders with Fe ions on the structural, optical and photocatalytic properties of anatase and rutile

V. V. Shymanovska
, T. A. Khalyavka
, E. V. Manuilov^*
, T. A. Gavrilko
, A. Aho
, V. V. Naumov
, N. D. Shcherban

^*Corresponding author for this work

Laboratory of Industrial Chemistry and Reaction Engineering

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

27 Citations (Scopus)

133 Downloads (Pure)

Abstract

The effect of surface Fe-doping on the structural, photocatalytic, optical properties of polydisperse anatase and rutile TiO₂ has been comprehensively studied. The TiO₂ surface has been modified by Fe³⁺ ions through the adsorption from the diluted FeCl₃ aqueous solutions. The prepared powders were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, temperature programmed desorption techniques (TPD), Raman and UV–vis spectroscopy. With the adsorption isotherms of Fe³⁺ ions from FeCl₃ aqueous solutions, it was found that adsorption of Fe³⁺ ions on the anatase surface is twice more efficient compared to that one on the rutile. The XRD and Raman spectroscopy measurements confirmed the monophase structure of the Fe-doped TiO₂ with a subtle change in the lattice parameters and O/Ti ratio compared to the undoped counterparts. The red shift of the UV absorption edge has been registered for the Fe-doped anatase resulting in a significant decrease of its bandgap from 3.2 to 2.7 eV. The photocatalytic destruction of organic dye Safranin T over the prepared Fe-doped TiO₂ under UV irradiation has been investigated. The influence of various energetically nonequivalent active sites on the surfaces of anatase and rutile on their photoactivity is considered.

Original language	English
Article number	110308
Journal	Journal of Physics and Chemistry of Solids
Volume	160
Early online date	4 Aug 2021
DOIs	https://doi.org/10.1016/j.jpcs.2021.110308
Publication status	Published - Jan 2022
MoE publication type	A1 Journal article-refereed

Funding

The work was supported by the National Academy of Sciences of Ukraine under the Target Research Program “Fundamental physical processes and phenomena in condensed matter physics, optics, physical electronics, nanophysics and prospects for their practical application for new devices and materials” (Project no. VC/188) and “Development of alternative methods for the preparation of nanosized oxide catalysts and composites based on Mo, Ti, Zr, Nb and Sn”.

Keywords

Acid sites
Anatase
Fe doped
Photocatalysis
Rutile

Access to Document

10.1016/j.jpcs.2021.110308Licence: All rights reserved

PCS_S_21_01034_1_Accepted author manuscript, 1.39 MBLicence: CC BY-NC-ND

https://urn.fi/URN:NBN:fi-fe202201148769

Cite this

@article{626ae559e4e8482db92f60796a9bb8f3,

title = "Effect of surface doping of TiO2 powders with Fe ions on the structural, optical and photocatalytic properties of anatase and rutile",

abstract = "The effect of surface Fe-doping on the structural, photocatalytic, optical properties of polydisperse anatase and rutile TiO2 has been comprehensively studied. The TiO2 surface has been modified by Fe3+ ions through the adsorption from the diluted FeCl3 aqueous solutions. The prepared powders were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, temperature programmed desorption techniques (TPD), Raman and UV–vis spectroscopy. With the adsorption isotherms of Fe3+ ions from FeCl3 aqueous solutions, it was found that adsorption of Fe3+ ions on the anatase surface is twice more efficient compared to that one on the rutile. The XRD and Raman spectroscopy measurements confirmed the monophase structure of the Fe-doped TiO2 with a subtle change in the lattice parameters and O/Ti ratio compared to the undoped counterparts. The red shift of the UV absorption edge has been registered for the Fe-doped anatase resulting in a significant decrease of its bandgap from 3.2 to 2.7 eV. The photocatalytic destruction of organic dye Safranin T over the prepared Fe-doped TiO2 under UV irradiation has been investigated. The influence of various energetically nonequivalent active sites on the surfaces of anatase and rutile on their photoactivity is considered.",

keywords = "Acid sites, Anatase, Fe doped, Photocatalysis, Rutile",

author = "Shymanovska, \{V. V.\} and Khalyavka, \{T. A.\} and Manuilov, \{E. V.\} and Gavrilko, \{T. A.\} and A. Aho and Naumov, \{V. V.\} and Shcherban, \{N. D.\}",

note = "Funding Information: The work was supported by the National Academy of Sciences of Ukraine under the Target Research Program “Fundamental physical processes and phenomena in condensed matter physics, optics, physical electronics, nanophysics and prospects for their practical application for new devices and materials” (Project no. VC/188) and “Development of alternative methods for the preparation of nanosized oxide catalysts and composites based on Mo, Ti, Zr, Nb and Sn”. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = jan,

doi = "10.1016/j.jpcs.2021.110308",

language = "English",

volume = "160",

journal = "Journal of Physics and Chemistry of Solids",

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T1 - Effect of surface doping of TiO2 powders with Fe ions on the structural, optical and photocatalytic properties of anatase and rutile

AU - Shymanovska, V. V.

AU - Khalyavka, T. A.

AU - Manuilov, E. V.

AU - Gavrilko, T. A.

AU - Aho, A.

AU - Naumov, V. V.

AU - Shcherban, N. D.

N1 - Funding Information: The work was supported by the National Academy of Sciences of Ukraine under the Target Research Program “Fundamental physical processes and phenomena in condensed matter physics, optics, physical electronics, nanophysics and prospects for their practical application for new devices and materials” (Project no. VC/188) and “Development of alternative methods for the preparation of nanosized oxide catalysts and composites based on Mo, Ti, Zr, Nb and Sn”. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2022/1

Y1 - 2022/1

N2 - The effect of surface Fe-doping on the structural, photocatalytic, optical properties of polydisperse anatase and rutile TiO2 has been comprehensively studied. The TiO2 surface has been modified by Fe3+ ions through the adsorption from the diluted FeCl3 aqueous solutions. The prepared powders were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, temperature programmed desorption techniques (TPD), Raman and UV–vis spectroscopy. With the adsorption isotherms of Fe3+ ions from FeCl3 aqueous solutions, it was found that adsorption of Fe3+ ions on the anatase surface is twice more efficient compared to that one on the rutile. The XRD and Raman spectroscopy measurements confirmed the monophase structure of the Fe-doped TiO2 with a subtle change in the lattice parameters and O/Ti ratio compared to the undoped counterparts. The red shift of the UV absorption edge has been registered for the Fe-doped anatase resulting in a significant decrease of its bandgap from 3.2 to 2.7 eV. The photocatalytic destruction of organic dye Safranin T over the prepared Fe-doped TiO2 under UV irradiation has been investigated. The influence of various energetically nonequivalent active sites on the surfaces of anatase and rutile on their photoactivity is considered.

AB - The effect of surface Fe-doping on the structural, photocatalytic, optical properties of polydisperse anatase and rutile TiO2 has been comprehensively studied. The TiO2 surface has been modified by Fe3+ ions through the adsorption from the diluted FeCl3 aqueous solutions. The prepared powders were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) surface area analysis, temperature programmed desorption techniques (TPD), Raman and UV–vis spectroscopy. With the adsorption isotherms of Fe3+ ions from FeCl3 aqueous solutions, it was found that adsorption of Fe3+ ions on the anatase surface is twice more efficient compared to that one on the rutile. The XRD and Raman spectroscopy measurements confirmed the monophase structure of the Fe-doped TiO2 with a subtle change in the lattice parameters and O/Ti ratio compared to the undoped counterparts. The red shift of the UV absorption edge has been registered for the Fe-doped anatase resulting in a significant decrease of its bandgap from 3.2 to 2.7 eV. The photocatalytic destruction of organic dye Safranin T over the prepared Fe-doped TiO2 under UV irradiation has been investigated. The influence of various energetically nonequivalent active sites on the surfaces of anatase and rutile on their photoactivity is considered.

KW - Acid sites

KW - Anatase

KW - Fe doped

KW - Photocatalysis

KW - Rutile

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