Details
| Original language | English |
|---|---|
| Pages (from-to) | 530-540 |
| Number of pages | 11 |
| Journal | Journal of Photochemistry and Photobiology A: Chemistry |
| Volume | 346 |
| Early online date | 4 Jul 2017 |
| Publication status | Published - 1 Sept 2017 |
Abstract
Visible light-activated C, N, S-tri-doped mesoporous anatase-brookite heterojunction TiO 2 photocatalyst has been synthesized by a facile hydrothermal method. The XRD and Raman spectra data revealed the formation of mixed anatase and brookite phases. The FE-SEM and TEM images demonstrated the formation of brookite phase with a rod-like structure composed of much smaller particles of anatase phase. N 2 isotherm measurements exhibited that both doped and undoped TiO 2 have mesoporous structure and their surface area measurements were reduced from 62 to 30 cm 2 g −1after non-metals doping. The photocatalytic oxidation of the ibuprofen (IBF) has been evaluated using prepared photocatalysts under visible light. The photocatalytic activity of the mesoporous C, N and S co-doped TiO 2 photocatalyst dramatically increased, achieving complete IBF degradation with an initial 1st order rate 1.779 μM min −1 for 5 h. The photonic efficiency (ξ) of IBF degradation under visible light with ABH (un-doped) and DABH (doped) photocatalysts are 0.044% and 1.84%, respectively. The reaction rate of doped photocatalyst is greater 40 times than non-doped one. The results demonstrated the advantages of the synthetic approach and the great potential of the driven visible light C, N and S co-doped TiO 2 photocatalysts for the treatment of residual pharmaceuticals in contaminated water under visible light.
Keywords
- Anatase/brookite TiO, Ibuprofen, Non-metal doping, Photodegradation, Visible light
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 346, 01.09.2017, p. 530-540.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Highly active non-metals doped mixed-phase TiO2 for photocatalytic oxidation of ibuprofen under visible light
AU - Khedr, T.M.
AU - El-Sheikh, S.M.
AU - Hakki, A.
AU - Ismail, A.A.
AU - Badawy, W.A.
AU - Bahnemann, D.W.
N1 - Publisher Copyright: © 2017 Elsevier B.V. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Visible light-activated C, N, S-tri-doped mesoporous anatase-brookite heterojunction TiO 2 photocatalyst has been synthesized by a facile hydrothermal method. The XRD and Raman spectra data revealed the formation of mixed anatase and brookite phases. The FE-SEM and TEM images demonstrated the formation of brookite phase with a rod-like structure composed of much smaller particles of anatase phase. N 2 isotherm measurements exhibited that both doped and undoped TiO 2 have mesoporous structure and their surface area measurements were reduced from 62 to 30 cm 2 g −1after non-metals doping. The photocatalytic oxidation of the ibuprofen (IBF) has been evaluated using prepared photocatalysts under visible light. The photocatalytic activity of the mesoporous C, N and S co-doped TiO 2 photocatalyst dramatically increased, achieving complete IBF degradation with an initial 1st order rate 1.779 μM min −1 for 5 h. The photonic efficiency (ξ) of IBF degradation under visible light with ABH (un-doped) and DABH (doped) photocatalysts are 0.044% and 1.84%, respectively. The reaction rate of doped photocatalyst is greater 40 times than non-doped one. The results demonstrated the advantages of the synthetic approach and the great potential of the driven visible light C, N and S co-doped TiO 2 photocatalysts for the treatment of residual pharmaceuticals in contaminated water under visible light.
AB - Visible light-activated C, N, S-tri-doped mesoporous anatase-brookite heterojunction TiO 2 photocatalyst has been synthesized by a facile hydrothermal method. The XRD and Raman spectra data revealed the formation of mixed anatase and brookite phases. The FE-SEM and TEM images demonstrated the formation of brookite phase with a rod-like structure composed of much smaller particles of anatase phase. N 2 isotherm measurements exhibited that both doped and undoped TiO 2 have mesoporous structure and their surface area measurements were reduced from 62 to 30 cm 2 g −1after non-metals doping. The photocatalytic oxidation of the ibuprofen (IBF) has been evaluated using prepared photocatalysts under visible light. The photocatalytic activity of the mesoporous C, N and S co-doped TiO 2 photocatalyst dramatically increased, achieving complete IBF degradation with an initial 1st order rate 1.779 μM min −1 for 5 h. The photonic efficiency (ξ) of IBF degradation under visible light with ABH (un-doped) and DABH (doped) photocatalysts are 0.044% and 1.84%, respectively. The reaction rate of doped photocatalyst is greater 40 times than non-doped one. The results demonstrated the advantages of the synthetic approach and the great potential of the driven visible light C, N and S co-doped TiO 2 photocatalysts for the treatment of residual pharmaceuticals in contaminated water under visible light.
KW - Anatase/brookite TiO
KW - Ibuprofen
KW - Non-metal doping
KW - Photodegradation
KW - Visible light
UR - http://www.scopus.com/inward/record.url?scp=85021861865&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2017.07.004
DO - 10.1016/j.jphotochem.2017.07.004
M3 - Article
VL - 346
SP - 530
EP - 540
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
SN - 1010-6030
ER -