Synergetic effect of N^sup 3-^, In^sup 3+^ and Sn^sup 4+^ ions in TiO^sub 2^ towards efficient visible photocatalysis

Nitrogen, indium and tin doped TiO2 photocatalyst (TiO2-N-In-Sn) was prepared by sol–gel method. It is revealed that Sn ions were doped into TiO2 lattice in substitutional mode, forming a new doped energy level 0.2 eV below the conduction band of TiO2; nitrogen and indium ions are presented as surfa...

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Published inJournal of photochemistry and photobiology. A, Chemistry. Vol. 356; p. 132
Main Authors Lan, Zijian, Yu, Yanlong, Yan, Sai, Wang, Enjun, Yao, Jianghong, Cao, Yaan
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier BV 01.04.2018
Subjects
Band gap
Catalytic activity
Conduction
Conduction bands
Current carriers
Energy levels
Indium
Ions
Irradiation
Nitrogen
Photocatalysis
Photodegradation
Radiation
Sol-gel processes
Tin
Titanium dioxide
Valence band
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Summary:Nitrogen, indium and tin doped TiO2 photocatalyst (TiO2-N-In-Sn) was prepared by sol–gel method. It is revealed that Sn ions were doped into TiO2 lattice in substitutional mode, forming a new doped energy level 0.2 eV below the conduction band of TiO2; nitrogen and indium ions are presented as surface NOx and O-In-Clx, located at 0.3 eV above the valence band and 0.3 eV below the conduction band, respectively. Owing to the synergetic effect of introduced nitrogen, indium and tin, the band structure of TiO2 is adjusted to extend the visible absorption and promote the separation of charge carriers, resulting in an improved photocatalytic activity on photo-degradation of 4-CP under visible irradiation.
ISSN:1010-6030
1873-2666