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Title: Visible light-sensitive yellow TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} anatase photocatalysts

Abstract

Nitrogen substituted yellow colored anatase TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} have been easily synthesized by novel hydrazine method. White anatase TiO{sub 2-} {sub {delta}} and N/Fe-N-doped samples are semiconducting and the presence of ESR signals at g {approx}1.994-2.0025 supports the oxygen vacancy and g{approx}4.3 indicates Fe{sup 3+} in the lattice. TiO{sub 2-} {sub x} N {sub x} has higher conductivity than TiO{sub 2-} {sub x} and Fe/Fe-N-doped anatase and the UV absorption edge of white TiO{sub 2-} {sub x} extends in the visible region in N, Fe and Fe-N co-doped TiO{sub 2}, which show, respectively, two band gaps at {approx}3.25/2.63, {approx}3.31/2.44 and 2.8/2.44 eV. An activation energy of {approx}1.8 eV is observed in Arrhenius log resistivity vs. 1/T plots for all samples. All TiO{sub 2} and Fe-doped TiO{sub 2} 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 TiO{sub 2} consist may cause this discrepancy in their photocatalytic activities. - Graphical abstract:more » DRS of TiO{sub 2}, N/Fe-N doped TiO{sub 2}.« less

Authors:
 [1];  [2];  [3];  [3];  [4];  [4];  [4]
  1. Department of Chemistry, Goa University, Panaji City, Goa 403206 (India). E-mail: ksrane@unigoa.ac.in
  2. Department of Chemistry, Goa University, Panaji City, Goa 403206 (India)
  3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katachira, Aoba-ku, Sendai, Miyagi 980-8577 (Japan)
  4. Environmental Engineering Science, School of Engineering and Applied Sciences, Washington University in St. Louis, One Brooking Drive, Campus Box 1180, St. Louis, MO 63130-4899 (United States)
Publication Date:
OSTI Identifier:
20902465
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 179; Journal Issue: 10; Other Information: DOI: 10.1016/j.jssc.2006.05.033; PII: S0022-4596(06)00318-5; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; ACTIVATION ENERGY; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; ELECTRON SPIN RESONANCE; EV RANGE; HYDRAZINE; IRON IONS; IRON OXIDES; NITRIDES; OXALATES; PHOTOCATALYSIS; TITANIUM OXIDES; VACANCIES; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Rane, K.S., Mhalsiker, R., Yin, S., Sato, T., Cho, Kuk, Dunbar, E., and Biswas, Pratim. Visible light-sensitive yellow TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} anatase photocatalysts. United States: N. p., 2006. Web. doi:10.1016/j.jssc.2006.05.033.
Rane, K.S., Mhalsiker, R., Yin, S., Sato, T., Cho, Kuk, Dunbar, E., & Biswas, Pratim. Visible light-sensitive yellow TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} anatase photocatalysts. United States. doi:10.1016/j.jssc.2006.05.033.
Rane, K.S., Mhalsiker, R., Yin, S., Sato, T., Cho, Kuk, Dunbar, E., and Biswas, Pratim. Sun . "Visible light-sensitive yellow TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} anatase photocatalysts". United States. doi:10.1016/j.jssc.2006.05.033.
@article{osti_20902465,
title = {Visible light-sensitive yellow TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} anatase photocatalysts},
author = {Rane, K.S. and Mhalsiker, R. and Yin, S. and Sato, T. and Cho, Kuk and Dunbar, E. and Biswas, Pratim},
abstractNote = {Nitrogen substituted yellow colored anatase TiO{sub 2-} {sub x} N {sub x} and Fe-N co-doped Ti{sub 1-} {sub y} Fe {sub y} O{sub 2-} {sub x} N {sub x} have been easily synthesized by novel hydrazine method. White anatase TiO{sub 2-} {sub {delta}} and N/Fe-N-doped samples are semiconducting and the presence of ESR signals at g {approx}1.994-2.0025 supports the oxygen vacancy and g{approx}4.3 indicates Fe{sup 3+} in the lattice. TiO{sub 2-} {sub x} N {sub x} has higher conductivity than TiO{sub 2-} {sub x} and Fe/Fe-N-doped anatase and the UV absorption edge of white TiO{sub 2-} {sub x} extends in the visible region in N, Fe and Fe-N co-doped TiO{sub 2}, which show, respectively, two band gaps at {approx}3.25/2.63, {approx}3.31/2.44 and 2.8/2.44 eV. An activation energy of {approx}1.8 eV is observed in Arrhenius log resistivity vs. 1/T plots for all samples. All TiO{sub 2} and Fe-doped TiO{sub 2} 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 TiO{sub 2} consist may cause this discrepancy in their photocatalytic activities. - Graphical abstract: DRS of TiO{sub 2}, N/Fe-N doped TiO{sub 2}.},
doi = {10.1016/j.jssc.2006.05.033},
journal = {Journal of Solid State Chemistry},
number = 10,
volume = 179,
place = {United States},
year = {Sun Oct 15 00:00:00 EDT 2006},
month = {Sun Oct 15 00:00:00 EDT 2006}
}