Visible light-sensitive yellow TiO2-xNx and Fe-N co-doped Ti1-yFeyO2-xNx anatase photocatalysts

K. S. Rane; R. Mhalsiker; S. Yin; T. Sato; Kuk Cho; E. Dunbar; Pratim Biswas

doi:10.1016/j.jssc.2006.05.033

Visible light-sensitive yellow TiO_2-xN_x and Fe-N co-doped Ti_1-yFe_yO_2-xN_x anatase photocatalysts

K. S. Rane, R. Mhalsiker, S. Yin, T. Sato, Kuk Cho, E. Dunbar, Pratim Biswas

Center for Exploration of New Inorganic Materials

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

75 Citations (Scopus)

Abstract

Nitrogen substituted yellow colored anatase TiO_2-xN_x and Fe-N co-doped Ti_1-yFe_yO_2-xN_x have been easily synthesized by novel hydrazine method. White anatase TiO_2-δ and N/Fe-N-doped samples are semiconducting and the presence of ESR signals at g ∼1.994-2.0025 supports the oxygen vacancy and g∼4.3 indicates Fe³⁺ in the lattice. TiO_2-xN_x has higher conductivity than TiO_2-x and Fe/Fe-N-doped anatase and the UV absorption edge of white TiO_2-x extends in the visible region in N, Fe and Fe-N co-doped TiO₂, which show, respectively, two band gaps at ∼3.25/2.63, ∼3.31/2.44 and 2.8/2.44 eV. An activation energy of ∼1.8 eV is observed in Arrhenius log resistivity vs. 1/T plots for all samples. All TiO₂ and Fe-doped TiO₂ show low 2-propanol photodegradation activity but have significant NO photodestruction capability, both in UV and visible regions, while standard Degussa P-25 is incapable in destroying NO in the visible region The mid-gap levels that these N and Fe-N-doped TiO₂ consist may cause this discrepancy in their photocatalytic activities.

Original language	English
Pages (from-to)	3033-3044
Number of pages	12
Journal	Journal of Solid State Chemistry
Volume	179
Issue number	10
DOIs	https://doi.org/10.1016/j.jssc.2006.05.033
Publication status	Published - 2006 Oct

Keywords

Anatase
Arrhenius plots
ESR
Electrical conductivity
Fe-N co-doped TiO
Hydrazine
N-TiO
Oxalate precursor
Oxalate-hydrazinate precursor
Photodegradation
XPS-N 1s peak

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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@article{fa73a25dc180449dbe603fdfcc7f75e7,

title = "Visible light-sensitive yellow TiO2-xNx and Fe-N co-doped Ti1-yFeyO2-xNx anatase photocatalysts",

abstract = "Nitrogen substituted yellow colored anatase TiO2-xNx and Fe-N co-doped Ti1-yFeyO2-xNx have been easily synthesized by novel hydrazine method. White anatase TiO2-δ and N/Fe-N-doped samples are semiconducting and the presence of ESR signals at g ∼1.994-2.0025 supports the oxygen vacancy and g∼4.3 indicates Fe3+ in the lattice. TiO2-xNx has higher conductivity than TiO2-x and Fe/Fe-N-doped anatase and the UV absorption edge of white TiO2-x extends in the visible region in N, Fe and Fe-N co-doped TiO2, which show, respectively, two band gaps at ∼3.25/2.63, ∼3.31/2.44 and 2.8/2.44 eV. An activation energy of ∼1.8 eV is observed in Arrhenius log resistivity vs. 1/T plots for all samples. All TiO2 and Fe-doped TiO2 show low 2-propanol photodegradation activity but have significant NO photodestruction capability, both in UV and visible regions, while standard Degussa P-25 is incapable in destroying NO in the visible region The mid-gap levels that these N and Fe-N-doped TiO2 consist may cause this discrepancy in their photocatalytic activities.",

keywords = "Anatase, Arrhenius plots, ESR, Electrical conductivity, Fe-N co-doped TiO, Hydrazine, N-TiO, Oxalate precursor, Oxalate-hydrazinate precursor, Photodegradation, XPS-N 1s peak",

author = "Rane, {K. S.} and R. Mhalsiker and S. Yin and T. Sato and Kuk Cho and E. Dunbar and Pratim Biswas",

note = "Funding Information: This work is partly supported by UGC (major project of KSR), DST (major project of Dr. B.R. Srinivasan and K.S.R.), DST-FIST and UGC-Special Assistance Programs of the Department of Chemistry, Goa University. K.S.R. is grateful to Dr. Gundu Rao, RSIC, IIT-Bombay for ESR spectra, Prof. M. Anpo and Dr. Neppolian of Osaka Prefecture University, Japan for ESCA and photodegradation of propanol investigations and useful discussions and Dr. Bindu Varughese of University of Maryland for XPS data. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2006",

month = oct,

doi = "10.1016/j.jssc.2006.05.033",

language = "English",

volume = "179",

pages = "3033--3044",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "10",

}

TY - JOUR

T1 - Visible light-sensitive yellow TiO2-xNx and Fe-N co-doped Ti1-yFeyO2-xNx anatase photocatalysts

AU - Rane, K. S.

AU - Mhalsiker, R.

AU - Yin, S.

AU - Sato, T.

AU - Cho, Kuk

AU - Dunbar, E.

AU - Biswas, Pratim

N1 - Funding Information: This work is partly supported by UGC (major project of KSR), DST (major project of Dr. B.R. Srinivasan and K.S.R.), DST-FIST and UGC-Special Assistance Programs of the Department of Chemistry, Goa University. K.S.R. is grateful to Dr. Gundu Rao, RSIC, IIT-Bombay for ESR spectra, Prof. M. Anpo and Dr. Neppolian of Osaka Prefecture University, Japan for ESCA and photodegradation of propanol investigations and useful discussions and Dr. Bindu Varughese of University of Maryland for XPS data. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2006/10

Y1 - 2006/10

N2 - Nitrogen substituted yellow colored anatase TiO2-xNx and Fe-N co-doped Ti1-yFeyO2-xNx have been easily synthesized by novel hydrazine method. White anatase TiO2-δ and N/Fe-N-doped samples are semiconducting and the presence of ESR signals at g ∼1.994-2.0025 supports the oxygen vacancy and g∼4.3 indicates Fe3+ in the lattice. TiO2-xNx has higher conductivity than TiO2-x and Fe/Fe-N-doped anatase and the UV absorption edge of white TiO2-x extends in the visible region in N, Fe and Fe-N co-doped TiO2, which show, respectively, two band gaps at ∼3.25/2.63, ∼3.31/2.44 and 2.8/2.44 eV. An activation energy of ∼1.8 eV is observed in Arrhenius log resistivity vs. 1/T plots for all samples. All TiO2 and Fe-doped TiO2 show low 2-propanol photodegradation activity but have significant NO photodestruction capability, both in UV and visible regions, while standard Degussa P-25 is incapable in destroying NO in the visible region The mid-gap levels that these N and Fe-N-doped TiO2 consist may cause this discrepancy in their photocatalytic activities.

AB - Nitrogen substituted yellow colored anatase TiO2-xNx and Fe-N co-doped Ti1-yFeyO2-xNx have been easily synthesized by novel hydrazine method. White anatase TiO2-δ and N/Fe-N-doped samples are semiconducting and the presence of ESR signals at g ∼1.994-2.0025 supports the oxygen vacancy and g∼4.3 indicates Fe3+ in the lattice. TiO2-xNx has higher conductivity than TiO2-x and Fe/Fe-N-doped anatase and the UV absorption edge of white TiO2-x extends in the visible region in N, Fe and Fe-N co-doped TiO2, which show, respectively, two band gaps at ∼3.25/2.63, ∼3.31/2.44 and 2.8/2.44 eV. An activation energy of ∼1.8 eV is observed in Arrhenius log resistivity vs. 1/T plots for all samples. All TiO2 and Fe-doped TiO2 show low 2-propanol photodegradation activity but have significant NO photodestruction capability, both in UV and visible regions, while standard Degussa P-25 is incapable in destroying NO in the visible region The mid-gap levels that these N and Fe-N-doped TiO2 consist may cause this discrepancy in their photocatalytic activities.

KW - Anatase

KW - Arrhenius plots

KW - ESR

KW - Electrical conductivity

KW - Fe-N co-doped TiO

KW - Hydrazine

KW - N-TiO

KW - Oxalate precursor

KW - Oxalate-hydrazinate precursor

KW - Photodegradation

KW - XPS-N 1s peak

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U2 - 10.1016/j.jssc.2006.05.033

DO - 10.1016/j.jssc.2006.05.033

M3 - Article

AN - SCOPUS:33747783916

VL - 179

SP - 3033

EP - 3044

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

IS - 10

ER -