Persistent luminescence assisted photocatalytic properties of CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y

Huihui Li; Shu Yin; Yuhua Wang; Tsugio Sato

doi:10.1016/j.molcata.2012.05.026

Persistent luminescence assisted photocatalytic properties of CaAl ₂O ₄:(Eu,Nd)/TiO _2-xN _y and Sr ₄Al ₁₄O ₂₅:(Eu,Dy)/TiO _2-xN _y

Huihui Li, Shu Yin, Yuhua Wang, Tsugio Sato

Center for Exploration of New Inorganic Materials

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

12 Citations (Scopus)

Abstract

The systematic experiments of photocatalytic degradation of NO gas and acetaldehyde were carried out by using novel composites consisting of TiO _2-xN _y loaded on two types of long afterglow phosphor, CaAl ₂O ₄:(Eu,Nd) and Sr ₄Al ₁₄O ₂₅:(Eu,Dy). The two kinds of composites were prepared in a sequence of the same procedures, which involved reactions of TiCl ₃ and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO _2-xN _y particles, followed by mixing the TiO _2-xN _y with a micro-size CaAl ₂O ₄:(Eu,Nd) or Sr ₄Al ₁₄O ₂₅:(Eu,Dy) particles by a facile planetary ball milling to yield CaAl ₂O ₄:(Eu,Nd)/TiO _2-xN _y or Sr ₄Al ₁₄O ₂₅:(Eu,Dy)/TiO _2-xN _y composites. Both composites showed the persistent photocatalytic degradation of NO and acetoaldehyde after turning off the light. CaAl ₂O ₄:(Eu,Nd) /TiO _2-xN _y showed higher persistent NO destruction ability in dark after turning off the light, while Sr ₄Al ₁₄O ₂₅:(Eu,Dy)/TiO _2-xN _y is excellent in CH ₃CHO removal. The difference in the photocatalytic activity observed for CaAl ₂O ₄:(Eu,Nd)/TiO _2-xN _y and Sr ₄Al ₁₄O ₂₅:(Eu,Dy)/TiO _2-xN _y might be attributed to the difference in the emission property.

Original language	English
Pages (from-to)	129-133
Number of pages	5
Journal	Journal of Molecular Catalysis A: Chemical
Volume	363-364
DOIs	https://doi.org/10.1016/j.molcata.2012.05.026
Publication status	Published - 2012 Nov 1

Keywords

Acetaldehyde
Nitrogen-doped TiO
Persistent luminescence assisted
Photocatalytic reaction
deNO

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

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@article{d2b5a86921df4037bd5cba757eb6ab47,

title = "Persistent luminescence assisted photocatalytic properties of CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y ",

abstract = "The systematic experiments of photocatalytic degradation of NO gas and acetaldehyde were carried out by using novel composites consisting of TiO 2-xN y loaded on two types of long afterglow phosphor, CaAl 2O 4:(Eu,Nd) and Sr 4Al 14O 25:(Eu,Dy). The two kinds of composites were prepared in a sequence of the same procedures, which involved reactions of TiCl 3 and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO 2-xN y particles, followed by mixing the TiO 2-xN y with a micro-size CaAl 2O 4:(Eu,Nd) or Sr 4Al 14O 25:(Eu,Dy) particles by a facile planetary ball milling to yield CaAl 2O 4:(Eu,Nd)/TiO 2-xN y or Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y composites. Both composites showed the persistent photocatalytic degradation of NO and acetoaldehyde after turning off the light. CaAl 2O 4:(Eu,Nd) /TiO 2-xN y showed higher persistent NO destruction ability in dark after turning off the light, while Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y is excellent in CH 3CHO removal. The difference in the photocatalytic activity observed for CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y might be attributed to the difference in the emission property.",

keywords = "Acetaldehyde, Nitrogen-doped TiO, Persistent luminescence assisted, Photocatalytic reaction, deNO",

author = "Huihui Li and Shu Yin and Yuhua Wang and Tsugio Sato",

year = "2012",

month = nov,

day = "1",

doi = "10.1016/j.molcata.2012.05.026",

language = "English",

volume = "363-364",

pages = "129--133",

journal = "Journal of Molecular Catalysis A: Chemical",

issn = "1381-1169",

publisher = "Elsevier",

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T1 - Persistent luminescence assisted photocatalytic properties of CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y

AU - Li, Huihui

AU - Yin, Shu

AU - Wang, Yuhua

AU - Sato, Tsugio

PY - 2012/11/1

Y1 - 2012/11/1

N2 - The systematic experiments of photocatalytic degradation of NO gas and acetaldehyde were carried out by using novel composites consisting of TiO 2-xN y loaded on two types of long afterglow phosphor, CaAl 2O 4:(Eu,Nd) and Sr 4Al 14O 25:(Eu,Dy). The two kinds of composites were prepared in a sequence of the same procedures, which involved reactions of TiCl 3 and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO 2-xN y particles, followed by mixing the TiO 2-xN y with a micro-size CaAl 2O 4:(Eu,Nd) or Sr 4Al 14O 25:(Eu,Dy) particles by a facile planetary ball milling to yield CaAl 2O 4:(Eu,Nd)/TiO 2-xN y or Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y composites. Both composites showed the persistent photocatalytic degradation of NO and acetoaldehyde after turning off the light. CaAl 2O 4:(Eu,Nd) /TiO 2-xN y showed higher persistent NO destruction ability in dark after turning off the light, while Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y is excellent in CH 3CHO removal. The difference in the photocatalytic activity observed for CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y might be attributed to the difference in the emission property.

AB - The systematic experiments of photocatalytic degradation of NO gas and acetaldehyde were carried out by using novel composites consisting of TiO 2-xN y loaded on two types of long afterglow phosphor, CaAl 2O 4:(Eu,Nd) and Sr 4Al 14O 25:(Eu,Dy). The two kinds of composites were prepared in a sequence of the same procedures, which involved reactions of TiCl 3 and hexamethylenetetramine (HMT) mixed solution at 190 °C for 2 h to precipitate nano-size TiO 2-xN y particles, followed by mixing the TiO 2-xN y with a micro-size CaAl 2O 4:(Eu,Nd) or Sr 4Al 14O 25:(Eu,Dy) particles by a facile planetary ball milling to yield CaAl 2O 4:(Eu,Nd)/TiO 2-xN y or Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y composites. Both composites showed the persistent photocatalytic degradation of NO and acetoaldehyde after turning off the light. CaAl 2O 4:(Eu,Nd) /TiO 2-xN y showed higher persistent NO destruction ability in dark after turning off the light, while Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y is excellent in CH 3CHO removal. The difference in the photocatalytic activity observed for CaAl 2O 4:(Eu,Nd)/TiO 2-xN y and Sr 4Al 14O 25:(Eu,Dy)/TiO 2-xN y might be attributed to the difference in the emission property.

KW - Acetaldehyde

KW - Nitrogen-doped TiO

KW - Persistent luminescence assisted

KW - Photocatalytic reaction

KW - deNO

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M3 - Article

AN - SCOPUS:84866009284

VL - 363-364

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EP - 133

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

SN - 1381-1169

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