Effect of synthesis methods on the photocatalytic DeNOx activity of CaAl2O4:(Eu, Nd)/TiO2-xNy composites

H. H. Li; S. Yin; T. Sato

doi:10.1088/1757-899X/18/17/172003

Effect of synthesis methods on the photocatalytic DeNO_x activity of CaAl₂O₄:(Eu, Nd)/TiO_2-xN_y composites

H. H. Li, S. Yin, T. Sato

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

CaAl2O4:(Eu,Nd)/TiO2-xNy composites were synthesized via two different methods, i.e., a two-step method (solvothermal reaction followed by mechanochemical treatment) and a one-step method (direct solvothermal dispersion method), and the photocatalytic activities were evaluated for deNOx ability both under UV light (λ>290 nm) irradiation and after turning off the UV light. It was confirmed that TiO2-xNy nanoparticles with anatase phase could be uniformly dispersed on the surface of CaAl2O4:(Eu, Nd) by both method. However, the composites prepared by a one-step method possessed much larger specific surface areas, higher photocatalytic activity and more prolonged catalytic time after turning off the light than those by a two-step method, indicating that the solvothermal method is more appropriate for the synthesis of CaAl2O4:(Eu, Nd)/TiO2-xNy composite photocatalyst.

Original language	English
Article number	172003
Journal	IOP Conference Series: Materials Science and Engineering
Volume	18
Issue number	SYMPOSIUM 11
DOIs	https://doi.org/10.1088/1757-899X/18/17/172003
Publication status	Published - 2011
Event	3rd International Congress on Ceramics, ICC 2011 - Osaka, Japan Duration: 2010 Nov 14 → 2010 Nov 18

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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10.1088/1757-899X/18/17/172003

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title = "Effect of synthesis methods on the photocatalytic DeNOx activity of CaAl2O4:(Eu, Nd)/TiO2-xNy composites",

abstract = "CaAl2O4:(Eu,Nd)/TiO2-xNy composites were synthesized via two different methods, i.e., a two-step method (solvothermal reaction followed by mechanochemical treatment) and a one-step method (direct solvothermal dispersion method), and the photocatalytic activities were evaluated for deNOx ability both under UV light (λ>290 nm) irradiation and after turning off the UV light. It was confirmed that TiO2-xNy nanoparticles with anatase phase could be uniformly dispersed on the surface of CaAl2O4:(Eu, Nd) by both method. However, the composites prepared by a one-step method possessed much larger specific surface areas, higher photocatalytic activity and more prolonged catalytic time after turning off the light than those by a two-step method, indicating that the solvothermal method is more appropriate for the synthesis of CaAl2O4:(Eu, Nd)/TiO2-xNy composite photocatalyst.",

author = "Li, {H. H.} and S. Yin and T. Sato",

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T1 - Effect of synthesis methods on the photocatalytic DeNOx activity of CaAl2O4:(Eu, Nd)/TiO2-xNy composites

AU - Li, H. H.

AU - Yin, S.

AU - Sato, T.

PY - 2011

Y1 - 2011

N2 - CaAl2O4:(Eu,Nd)/TiO2-xNy composites were synthesized via two different methods, i.e., a two-step method (solvothermal reaction followed by mechanochemical treatment) and a one-step method (direct solvothermal dispersion method), and the photocatalytic activities were evaluated for deNOx ability both under UV light (λ>290 nm) irradiation and after turning off the UV light. It was confirmed that TiO2-xNy nanoparticles with anatase phase could be uniformly dispersed on the surface of CaAl2O4:(Eu, Nd) by both method. However, the composites prepared by a one-step method possessed much larger specific surface areas, higher photocatalytic activity and more prolonged catalytic time after turning off the light than those by a two-step method, indicating that the solvothermal method is more appropriate for the synthesis of CaAl2O4:(Eu, Nd)/TiO2-xNy composite photocatalyst.

AB - CaAl2O4:(Eu,Nd)/TiO2-xNy composites were synthesized via two different methods, i.e., a two-step method (solvothermal reaction followed by mechanochemical treatment) and a one-step method (direct solvothermal dispersion method), and the photocatalytic activities were evaluated for deNOx ability both under UV light (λ>290 nm) irradiation and after turning off the UV light. It was confirmed that TiO2-xNy nanoparticles with anatase phase could be uniformly dispersed on the surface of CaAl2O4:(Eu, Nd) by both method. However, the composites prepared by a one-step method possessed much larger specific surface areas, higher photocatalytic activity and more prolonged catalytic time after turning off the light than those by a two-step method, indicating that the solvothermal method is more appropriate for the synthesis of CaAl2O4:(Eu, Nd)/TiO2-xNy composite photocatalyst.

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DO - 10.1088/1757-899X/18/17/172003

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JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

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Effect of synthesis methods on the photocatalytic DeNO_x activity of CaAl₂O₄:(Eu, Nd)/TiO_2-xN_y composites

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