Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 43-54 |
| Seitenumfang | 12 |
| Fachzeitschrift | Journal of hazardous materials |
| Jahrgang | 307 |
| Frühes Online-Datum | 28 Dez. 2015 |
| Publikationsstatus | Veröffentlicht - 15 Apr. 2016 |
Abstract
Herein, we report the ease synthesis of mesoporous WO 3-TiO 2 nanocomposites at different WO 3 contents (0-5wt%) together with their photocatalytic performance for the degradation of the imazapyr herbicide under visible light and UV illumination. XRD and Raman spectra indicated that the highly crystalline anatase TiO 2 phase and monoclinic and triclinic of WO 3 were formed. The mesoporous TiO 2 exhibits large pore volumes of 0.267cm 3g-1 and high surface areas of 180m 2g -1 but they become reduced to 0.221cm 3g -1 and 113m 2g -1, respectively upon WO 3 incorporation, with tunable mesopore diameter in the range of 5-6.5nm. TEM images show WO 3-TiO 2 nanocomposites are quite uniform with 10-15nm of TiO 2 and 5-10nm of WO 3 sizes. Under UV illumination, the overall photocatalytic efficiency of the 3% WO 3-TiO 2 nanocomposite is 3.5 and 6.6 times higher than that of mesoporous TiO 2 and commercial UV-100 photocatalyst, respectively. The 3% WO 3-TiO 2 nanocomposite is considered to be the optimum photocatalyst which is able to degrade completely (100% conversion) of imazapyr herbicide along 120min with high photonic efficiency ~8%. While under visible light illumination, the 0.5% WO 3-TiO 2 nanocomposite is the optimum photocatalyst which achieves 46% photocatalytic efficiency.
ASJC Scopus Sachgebiete
- Umweltwissenschaften (insg.)
- Environmental engineering
- Umweltwissenschaften (insg.)
- Umweltchemie
- Umweltwissenschaften (insg.)
- Abfallwirtschaft und -entsorgung
- Umweltwissenschaften (insg.)
- Umweltverschmutzung
- Umweltwissenschaften (insg.)
- Gesundheit, Toxikologie und Mutagenese
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in: Journal of hazardous materials, Jahrgang 307, 15.04.2016, S. 43-54.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Ease synthesis of mesoporous WO3–TiO2 nanocomposites with enhanced photocatalytic performance for photodegradation of herbicide imazapyr under visible light and UV illumination
AU - Ismail, A.A.
AU - Abdelfattah, I.
AU - Helal, A.
AU - Al-Sayari, S.A.
AU - Robben, L.
AU - Bahnemann, D.W.
N1 - Publisher Copyright: © 2015 Elsevier B.V.. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/4/15
Y1 - 2016/4/15
N2 - Herein, we report the ease synthesis of mesoporous WO 3-TiO 2 nanocomposites at different WO 3 contents (0-5wt%) together with their photocatalytic performance for the degradation of the imazapyr herbicide under visible light and UV illumination. XRD and Raman spectra indicated that the highly crystalline anatase TiO 2 phase and monoclinic and triclinic of WO 3 were formed. The mesoporous TiO 2 exhibits large pore volumes of 0.267cm 3g-1 and high surface areas of 180m 2g -1 but they become reduced to 0.221cm 3g -1 and 113m 2g -1, respectively upon WO 3 incorporation, with tunable mesopore diameter in the range of 5-6.5nm. TEM images show WO 3-TiO 2 nanocomposites are quite uniform with 10-15nm of TiO 2 and 5-10nm of WO 3 sizes. Under UV illumination, the overall photocatalytic efficiency of the 3% WO 3-TiO 2 nanocomposite is 3.5 and 6.6 times higher than that of mesoporous TiO 2 and commercial UV-100 photocatalyst, respectively. The 3% WO 3-TiO 2 nanocomposite is considered to be the optimum photocatalyst which is able to degrade completely (100% conversion) of imazapyr herbicide along 120min with high photonic efficiency ~8%. While under visible light illumination, the 0.5% WO 3-TiO 2 nanocomposite is the optimum photocatalyst which achieves 46% photocatalytic efficiency.
AB - Herein, we report the ease synthesis of mesoporous WO 3-TiO 2 nanocomposites at different WO 3 contents (0-5wt%) together with their photocatalytic performance for the degradation of the imazapyr herbicide under visible light and UV illumination. XRD and Raman spectra indicated that the highly crystalline anatase TiO 2 phase and monoclinic and triclinic of WO 3 were formed. The mesoporous TiO 2 exhibits large pore volumes of 0.267cm 3g-1 and high surface areas of 180m 2g -1 but they become reduced to 0.221cm 3g -1 and 113m 2g -1, respectively upon WO 3 incorporation, with tunable mesopore diameter in the range of 5-6.5nm. TEM images show WO 3-TiO 2 nanocomposites are quite uniform with 10-15nm of TiO 2 and 5-10nm of WO 3 sizes. Under UV illumination, the overall photocatalytic efficiency of the 3% WO 3-TiO 2 nanocomposite is 3.5 and 6.6 times higher than that of mesoporous TiO 2 and commercial UV-100 photocatalyst, respectively. The 3% WO 3-TiO 2 nanocomposite is considered to be the optimum photocatalyst which is able to degrade completely (100% conversion) of imazapyr herbicide along 120min with high photonic efficiency ~8%. While under visible light illumination, the 0.5% WO 3-TiO 2 nanocomposite is the optimum photocatalyst which achieves 46% photocatalytic efficiency.
KW - Imazapyr
KW - Mesoporous
KW - Photocatalyst
KW - UV and visible light illumination
KW - WO -TiO
UR - http://www.scopus.com/inward/record.url?scp=84954305971&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2015.12.041
DO - 10.1016/j.jhazmat.2015.12.041
M3 - Article
VL - 307
SP - 43
EP - 54
JO - Journal of hazardous materials
JF - Journal of hazardous materials
SN - 0304-3894
ER -