Probing significant light absorption enhancement of titania inverse opal films for highly exalted photocatalytic degradation of dye pollutants

Min Wu, Jing Liu, Jun Jin, Chao Wang, Shaozhuan Huang, Zhao Deng, Yu Li, Bao Lian Su

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The continuous titania inverse opal (TiO2-IO) films have been prepared by sol-gel infiltration method and calcined at different temperatures. The morphologies of the TiO2 inverse opal films remain unchanged under high temperature treatment. XRD patterns reveal an anatase crystalline phase between 550 and 900°C and a mixture of anatase and rutile phase at 1000°C. Comparing with the mesoporous TiO2 films obtained under the same conditions, all the TiO2 inverse opal films demonstrate a highly enhanced photocatalytic activity in photodegradation of rhodamine B (RhB) as dye pollutant model in aqueous solution. In spite of the fact that the TiO2 inverse opal films with open macroporous structures and possible light scattering effect of the wavelengths can result in the higher photocatalytic activity in the degradation of the dye pollutant, the phenomenon of the slow photon occurring in the TiO2 inverse opal photonic crystals can explain the extraordinary enhancement of the photocatalytic activity. In consequence, the TiO2-IO-700, TiO2-IO-550 and TiO2-IO-800 films show the best photocatalytic performance mainly due to the slow photon effect at the light incident angle at 0°, 20° and 45°, respectively, a direct proof of light absorption enhancement due to the slow photon effect. The slow photon effect in TiO2 inverse opals to enhance light absorption and further to enhance photocatalysis is very important for further potential applications in solar cells and other processes linked to the light absorption.

langue originaleAnglais
Pages (de - à)411-420
Nombre de pages10
journalApplied Catalysis B: Environmental
Volume150-151
Les DOIs
étatPublié - 5 mai 2014

Empreinte digitale

opal
Light absorption
titanium
dye
Coloring Agents
Dyes
Titanium
Degradation
degradation
pollutant
Photons
rhodamine B
anatase
Titanium dioxide
Photocatalysis
Photodegradation
light scattering
photodegradation
rutile
Photonic crystals

Citer ceci

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title = "Probing significant light absorption enhancement of titania inverse opal films for highly exalted photocatalytic degradation of dye pollutants",
abstract = "The continuous titania inverse opal (TiO2-IO) films have been prepared by sol-gel infiltration method and calcined at different temperatures. The morphologies of the TiO2 inverse opal films remain unchanged under high temperature treatment. XRD patterns reveal an anatase crystalline phase between 550 and 900°C and a mixture of anatase and rutile phase at 1000°C. Comparing with the mesoporous TiO2 films obtained under the same conditions, all the TiO2 inverse opal films demonstrate a highly enhanced photocatalytic activity in photodegradation of rhodamine B (RhB) as dye pollutant model in aqueous solution. In spite of the fact that the TiO2 inverse opal films with open macroporous structures and possible light scattering effect of the wavelengths can result in the higher photocatalytic activity in the degradation of the dye pollutant, the phenomenon of the slow photon occurring in the TiO2 inverse opal photonic crystals can explain the extraordinary enhancement of the photocatalytic activity. In consequence, the TiO2-IO-700, TiO2-IO-550 and TiO2-IO-800 films show the best photocatalytic performance mainly due to the slow photon effect at the light incident angle at 0°, 20° and 45°, respectively, a direct proof of light absorption enhancement due to the slow photon effect. The slow photon effect in TiO2 inverse opals to enhance light absorption and further to enhance photocatalysis is very important for further potential applications in solar cells and other processes linked to the light absorption.",
keywords = "Inverse opal, Photocatalytic activity, Photonic crystal, Slow photon, TiO",
author = "Min Wu and Jing Liu and Jun Jin and Chao Wang and Shaozhuan Huang and Zhao Deng and Yu Li and Su, {Bao Lian}",
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pages = "411--420",
journal = "Applied Catalysis B Environmental",
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Probing significant light absorption enhancement of titania inverse opal films for highly exalted photocatalytic degradation of dye pollutants. / Wu, Min; Liu, Jing; Jin, Jun; Wang, Chao; Huang, Shaozhuan; Deng, Zhao; Li, Yu; Su, Bao Lian.

Dans: Applied Catalysis B: Environmental, Vol 150-151, 05.05.2014, p. 411-420.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Probing significant light absorption enhancement of titania inverse opal films for highly exalted photocatalytic degradation of dye pollutants

AU - Wu, Min

AU - Liu, Jing

AU - Jin, Jun

AU - Wang, Chao

AU - Huang, Shaozhuan

AU - Deng, Zhao

AU - Li, Yu

AU - Su, Bao Lian

PY - 2014/5/5

Y1 - 2014/5/5

N2 - The continuous titania inverse opal (TiO2-IO) films have been prepared by sol-gel infiltration method and calcined at different temperatures. The morphologies of the TiO2 inverse opal films remain unchanged under high temperature treatment. XRD patterns reveal an anatase crystalline phase between 550 and 900°C and a mixture of anatase and rutile phase at 1000°C. Comparing with the mesoporous TiO2 films obtained under the same conditions, all the TiO2 inverse opal films demonstrate a highly enhanced photocatalytic activity in photodegradation of rhodamine B (RhB) as dye pollutant model in aqueous solution. In spite of the fact that the TiO2 inverse opal films with open macroporous structures and possible light scattering effect of the wavelengths can result in the higher photocatalytic activity in the degradation of the dye pollutant, the phenomenon of the slow photon occurring in the TiO2 inverse opal photonic crystals can explain the extraordinary enhancement of the photocatalytic activity. In consequence, the TiO2-IO-700, TiO2-IO-550 and TiO2-IO-800 films show the best photocatalytic performance mainly due to the slow photon effect at the light incident angle at 0°, 20° and 45°, respectively, a direct proof of light absorption enhancement due to the slow photon effect. The slow photon effect in TiO2 inverse opals to enhance light absorption and further to enhance photocatalysis is very important for further potential applications in solar cells and other processes linked to the light absorption.

AB - The continuous titania inverse opal (TiO2-IO) films have been prepared by sol-gel infiltration method and calcined at different temperatures. The morphologies of the TiO2 inverse opal films remain unchanged under high temperature treatment. XRD patterns reveal an anatase crystalline phase between 550 and 900°C and a mixture of anatase and rutile phase at 1000°C. Comparing with the mesoporous TiO2 films obtained under the same conditions, all the TiO2 inverse opal films demonstrate a highly enhanced photocatalytic activity in photodegradation of rhodamine B (RhB) as dye pollutant model in aqueous solution. In spite of the fact that the TiO2 inverse opal films with open macroporous structures and possible light scattering effect of the wavelengths can result in the higher photocatalytic activity in the degradation of the dye pollutant, the phenomenon of the slow photon occurring in the TiO2 inverse opal photonic crystals can explain the extraordinary enhancement of the photocatalytic activity. In consequence, the TiO2-IO-700, TiO2-IO-550 and TiO2-IO-800 films show the best photocatalytic performance mainly due to the slow photon effect at the light incident angle at 0°, 20° and 45°, respectively, a direct proof of light absorption enhancement due to the slow photon effect. The slow photon effect in TiO2 inverse opals to enhance light absorption and further to enhance photocatalysis is very important for further potential applications in solar cells and other processes linked to the light absorption.

KW - Inverse opal

KW - Photocatalytic activity

KW - Photonic crystal

KW - Slow photon

KW - TiO

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JO - Applied Catalysis B Environmental

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