Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid
Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, F...
Ausführliche Beschreibung
Gespeichert in:
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Arellano, U. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
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2018transfer abstract |
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13 |
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| Übergeordnetes Werk: |
Enthalten in: Road traffic crash characteristics of drivers who take prescription medicines that carry a risk to driving - Lu, Li ELSEVIER, 2020, including materials science communications : an international, interdisciplinary journal on science characterization and processing of advanced materials : the international journal of the Chinese Society for Materials Science, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:214 ; year:2018 ; day:1 ; month:08 ; pages:247-259 ; extent:13 |
| Links: |
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| DOI / URN: |
10.1016/j.matchemphys.2018.04.093 |
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| 245 | 1 | 0 | |a Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid |
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| 520 | |a Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. | ||
| 520 | |a Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. | ||
| 650 | 7 | |a Rietveld refinement |2 Elsevier | |
| 650 | 7 | |a Sol-gel |2 Elsevier | |
| 650 | 7 | |a 2,4-dichlorophenoxyacetic acid |2 Elsevier | |
| 650 | 7 | |a Fe-TiO<ce:inf loc="post">2</ce:inf> |2 Elsevier | |
| 650 | 7 | |a Photocatalyst |2 Elsevier | |
| 700 | 1 | |a Wang, J.A. |4 oth | |
| 700 | 1 | |a Asomoza, M. |4 oth | |
| 700 | 1 | |a Chen, L.F. |4 oth | |
| 700 | 1 | |a González, J. |4 oth | |
| 700 | 1 | |a Manzo, A. |4 oth | |
| 700 | 1 | |a Solís, S. |4 oth | |
| 700 | 1 | |a Lara, V.H. |4 oth | |
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10.1016/j.matchemphys.2018.04.093 doi GBV00000000000686.pica (DE-627)ELV043191118 (ELSEVIER)S0254-0584(18)30362-6 DE-627 ger DE-627 rakwb eng 610 VZ 44.38 bkl 44.91 bkl Arellano, U. verfasserin aut Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid 2018transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Rietveld refinement Elsevier Sol-gel Elsevier 2,4-dichlorophenoxyacetic acid Elsevier Fe-TiO<ce:inf loc="post">2</ce:inf> Elsevier Photocatalyst Elsevier Wang, J.A. oth Asomoza, M. oth Chen, L.F. oth González, J. oth Manzo, A. oth Solís, S. oth Lara, V.H. oth Enthalten in Elsevier Lu, Li ELSEVIER Road traffic crash characteristics of drivers who take prescription medicines that carry a risk to driving 2020 including materials science communications : an international, interdisciplinary journal on science characterization and processing of advanced materials : the international journal of the Chinese Society for Materials Science New York, NY [u.a.] (DE-627)ELV005250781 volume:214 year:2018 day:1 month:08 pages:247-259 extent:13 https://doi.org/10.1016/j.matchemphys.2018.04.093 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.38 Pharmakologie VZ 44.91 Psychiatrie Psychopathologie VZ AR 214 2018 1 0801 247-259 13 |
| spelling |
10.1016/j.matchemphys.2018.04.093 doi GBV00000000000686.pica (DE-627)ELV043191118 (ELSEVIER)S0254-0584(18)30362-6 DE-627 ger DE-627 rakwb eng 610 VZ 44.38 bkl 44.91 bkl Arellano, U. verfasserin aut Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid 2018transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Rietveld refinement Elsevier Sol-gel Elsevier 2,4-dichlorophenoxyacetic acid Elsevier Fe-TiO<ce:inf loc="post">2</ce:inf> Elsevier Photocatalyst Elsevier Wang, J.A. oth Asomoza, M. oth Chen, L.F. oth González, J. oth Manzo, A. oth Solís, S. oth Lara, V.H. oth Enthalten in Elsevier Lu, Li ELSEVIER Road traffic crash characteristics of drivers who take prescription medicines that carry a risk to driving 2020 including materials science communications : an international, interdisciplinary journal on science characterization and processing of advanced materials : the international journal of the Chinese Society for Materials Science New York, NY [u.a.] (DE-627)ELV005250781 volume:214 year:2018 day:1 month:08 pages:247-259 extent:13 https://doi.org/10.1016/j.matchemphys.2018.04.093 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.38 Pharmakologie VZ 44.91 Psychiatrie Psychopathologie VZ AR 214 2018 1 0801 247-259 13 |
| allfields_unstemmed |
10.1016/j.matchemphys.2018.04.093 doi GBV00000000000686.pica (DE-627)ELV043191118 (ELSEVIER)S0254-0584(18)30362-6 DE-627 ger DE-627 rakwb eng 610 VZ 44.38 bkl 44.91 bkl Arellano, U. verfasserin aut Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid 2018transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Rietveld refinement Elsevier Sol-gel Elsevier 2,4-dichlorophenoxyacetic acid Elsevier Fe-TiO<ce:inf loc="post">2</ce:inf> Elsevier Photocatalyst Elsevier Wang, J.A. oth Asomoza, M. oth Chen, L.F. oth González, J. oth Manzo, A. oth Solís, S. oth Lara, V.H. oth Enthalten in Elsevier Lu, Li ELSEVIER Road traffic crash characteristics of drivers who take prescription medicines that carry a risk to driving 2020 including materials science communications : an international, interdisciplinary journal on science characterization and processing of advanced materials : the international journal of the Chinese Society for Materials Science New York, NY [u.a.] (DE-627)ELV005250781 volume:214 year:2018 day:1 month:08 pages:247-259 extent:13 https://doi.org/10.1016/j.matchemphys.2018.04.093 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.38 Pharmakologie VZ 44.91 Psychiatrie Psychopathologie VZ AR 214 2018 1 0801 247-259 13 |
| allfieldsGer |
10.1016/j.matchemphys.2018.04.093 doi GBV00000000000686.pica (DE-627)ELV043191118 (ELSEVIER)S0254-0584(18)30362-6 DE-627 ger DE-627 rakwb eng 610 VZ 44.38 bkl 44.91 bkl Arellano, U. verfasserin aut Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid 2018transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. Rietveld refinement Elsevier Sol-gel Elsevier 2,4-dichlorophenoxyacetic acid Elsevier Fe-TiO<ce:inf loc="post">2</ce:inf> Elsevier Photocatalyst Elsevier Wang, J.A. oth Asomoza, M. oth Chen, L.F. oth González, J. oth Manzo, A. oth Solís, S. oth Lara, V.H. oth Enthalten in Elsevier Lu, Li ELSEVIER Road traffic crash characteristics of drivers who take prescription medicines that carry a risk to driving 2020 including materials science communications : an international, interdisciplinary journal on science characterization and processing of advanced materials : the international journal of the Chinese Society for Materials Science New York, NY [u.a.] (DE-627)ELV005250781 volume:214 year:2018 day:1 month:08 pages:247-259 extent:13 https://doi.org/10.1016/j.matchemphys.2018.04.093 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.38 Pharmakologie VZ 44.91 Psychiatrie Psychopathologie VZ AR 214 2018 1 0801 247-259 13 |
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Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid |
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crystalline structure, surface chemistry and catalytic properties of fe<ce:sup loc="post">3+</ce:sup> doped tio<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid |
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Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid |
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Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. |
| abstractGer |
Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. |
| abstract_unstemmed |
Highly active Fe3+ doped TiO2 (xFe–TiO2 where x = 3 or 5 wt%) photocatalysts were synthesized by the sol–gel method and their structures were refined with the Rietveld method. Several important effects of calcination temperature on the crystalline structure, textural features, phase concentration, Fe3+ distribution, optical properties, and photocatalytic activity were determined. When Fe–TiO2 materials were calcined at 400 °C, most of Fe3+ were formed α-Fe2O3 and some of them were incorporated in the network of TiO2 anatase; as calcination temperature increased to 800 °C, α-Fe2O3 and FeTiO3 coexisted on the TiO2 rutile phase. High calcination temperature also led to surface area sharply diminishing and the surface oxygen reducibility significantly decreasing. The interatomic distances of Fe–TiO2 catalysts obtained from the method of radial distribution function (RDF) were: Ti…O = 1.93 Å (anatase), Fe…O = 2.59 Å, Ti…Ti = 3.08 Å, Ti…Fe = 3.69 Å, Ti…Ti = 3.79 Å, Ti…O = 4.83 Å (rutile). In the photooxidation of 2,4-dichlorophenoxyacetic acid (2,4-DA), the photocatalytic activity of Fe–TiO2 catalyst increased with increase of Fe3+ content in anatase phase. The 2,4-DA photooxidation followed the first-order kinetic reaction model and favored under acidic condition. Approximately 95% 2,4–DA were photooxidized with the best catalyst 5Fe–TiO2–400 after 120 min of reaction under UV irradiation. TiO2 phase transformation from anatase to rutile and FeTiO3 formation at 800 °C negatively impacted on the photocatalytic performance. The catalytic activity of the catalysts correlated well with variations of textural properties, phase concentration, and surface oxygen reducibility that were all controlled by the calcination temperature. |
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| title_short |
Crystalline structure, surface chemistry and catalytic properties of Fe<ce:sup loc="post">3+</ce:sup> doped TiO<ce:inf loc="post">2</ce:inf> sol–gel catalysts for photooxidation of 2,4–dichlorophenoxyacetic acid |
| url |
https://doi.org/10.1016/j.matchemphys.2018.04.093 |
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Wang, J.A. Asomoza, M. Chen, L.F. González, J. Manzo, A. Solís, S. Lara, V.H. |
| author2Str |
Wang, J.A. Asomoza, M. Chen, L.F. González, J. Manzo, A. Solís, S. Lara, V.H. |
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ELV005250781 |
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| doi_str |
10.1016/j.matchemphys.2018.04.093 |
| up_date |
2024-07-06T18:10:25.337Z |
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