Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities
Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this mo...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Huang, Yanlin [verfasserIn] |
|---|
| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019transfer abstract |
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| Übergeordnetes Werk: |
Enthalten in: Characterising shape patterns using features derived from best-fitting ellipsoids - Gontar, Amelia ELSEVIER, 2018, a journal devoted to applied physics and chemistry of surfaces and interfaces, Amsterdam |
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| Übergeordnetes Werk: |
volume:495 ; year:2019 ; day:30 ; month:11 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.apsusc.2019.143640 |
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ELV047948914 |
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| 520 | |a Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. | ||
| 520 | |a Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. | ||
| 700 | 1 | |a Zhou, Guitao |4 oth | |
| 700 | 1 | |a Bi, Shala |4 oth | |
| 700 | 1 | |a Wei, Donglei |4 oth | |
| 700 | 1 | |a Seo, Hyo Jin |4 oth | |
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10.1016/j.apsusc.2019.143640 doi GBV00000000000753.pica (DE-627)ELV047948914 (ELSEVIER)S0169-4332(19)32437-7 DE-627 ger DE-627 rakwb eng 000 150 VZ 54.74 bkl Huang, Yanlin verfasserin aut Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Zhou, Guitao oth Bi, Shala oth Wei, Donglei oth Seo, Hyo Jin oth Enthalten in Elsevier Gontar, Amelia ELSEVIER Characterising shape patterns using features derived from best-fitting ellipsoids 2018 a journal devoted to applied physics and chemistry of surfaces and interfaces Amsterdam (DE-627)ELV000097942 volume:495 year:2019 day:30 month:11 pages:0 https://doi.org/10.1016/j.apsusc.2019.143640 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.74 Maschinelles Sehen VZ AR 495 2019 30 1130 0 |
| spelling |
10.1016/j.apsusc.2019.143640 doi GBV00000000000753.pica (DE-627)ELV047948914 (ELSEVIER)S0169-4332(19)32437-7 DE-627 ger DE-627 rakwb eng 000 150 VZ 54.74 bkl Huang, Yanlin verfasserin aut Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Zhou, Guitao oth Bi, Shala oth Wei, Donglei oth Seo, Hyo Jin oth Enthalten in Elsevier Gontar, Amelia ELSEVIER Characterising shape patterns using features derived from best-fitting ellipsoids 2018 a journal devoted to applied physics and chemistry of surfaces and interfaces Amsterdam (DE-627)ELV000097942 volume:495 year:2019 day:30 month:11 pages:0 https://doi.org/10.1016/j.apsusc.2019.143640 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.74 Maschinelles Sehen VZ AR 495 2019 30 1130 0 |
| allfields_unstemmed |
10.1016/j.apsusc.2019.143640 doi GBV00000000000753.pica (DE-627)ELV047948914 (ELSEVIER)S0169-4332(19)32437-7 DE-627 ger DE-627 rakwb eng 000 150 VZ 54.74 bkl Huang, Yanlin verfasserin aut Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Zhou, Guitao oth Bi, Shala oth Wei, Donglei oth Seo, Hyo Jin oth Enthalten in Elsevier Gontar, Amelia ELSEVIER Characterising shape patterns using features derived from best-fitting ellipsoids 2018 a journal devoted to applied physics and chemistry of surfaces and interfaces Amsterdam (DE-627)ELV000097942 volume:495 year:2019 day:30 month:11 pages:0 https://doi.org/10.1016/j.apsusc.2019.143640 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.74 Maschinelles Sehen VZ AR 495 2019 30 1130 0 |
| allfieldsGer |
10.1016/j.apsusc.2019.143640 doi GBV00000000000753.pica (DE-627)ELV047948914 (ELSEVIER)S0169-4332(19)32437-7 DE-627 ger DE-627 rakwb eng 000 150 VZ 54.74 bkl Huang, Yanlin verfasserin aut Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Zhou, Guitao oth Bi, Shala oth Wei, Donglei oth Seo, Hyo Jin oth Enthalten in Elsevier Gontar, Amelia ELSEVIER Characterising shape patterns using features derived from best-fitting ellipsoids 2018 a journal devoted to applied physics and chemistry of surfaces and interfaces Amsterdam (DE-627)ELV000097942 volume:495 year:2019 day:30 month:11 pages:0 https://doi.org/10.1016/j.apsusc.2019.143640 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.74 Maschinelles Sehen VZ AR 495 2019 30 1130 0 |
| allfieldsSound |
10.1016/j.apsusc.2019.143640 doi GBV00000000000753.pica (DE-627)ELV047948914 (ELSEVIER)S0169-4332(19)32437-7 DE-627 ger DE-627 rakwb eng 000 150 VZ 54.74 bkl Huang, Yanlin verfasserin aut Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities 2019transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. Zhou, Guitao oth Bi, Shala oth Wei, Donglei oth Seo, Hyo Jin oth Enthalten in Elsevier Gontar, Amelia ELSEVIER Characterising shape patterns using features derived from best-fitting ellipsoids 2018 a journal devoted to applied physics and chemistry of surfaces and interfaces Amsterdam (DE-627)ELV000097942 volume:495 year:2019 day:30 month:11 pages:0 https://doi.org/10.1016/j.apsusc.2019.143640 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 54.74 Maschinelles Sehen VZ AR 495 2019 30 1130 0 |
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This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. 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Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities |
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Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities |
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bandgap narrowing of bi<ce:inf loc="post">13−x</ce:inf>te<ce:inf loc="post">x</ce:inf>mo<ce:inf loc="post">4−x</ce:inf>v<ce:inf loc="post">1+x</ce:inf>o<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities |
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Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities |
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Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. |
| abstractGer |
Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. |
| abstract_unstemmed |
Bi13Mo4VO34 has a peculiar structure with an infinite (Bi12O14) n columns surrounded by (Mo,V)O4 tetrahedra. The substitutions of Te4+ for Bi3+ and V5+ for Mo6+ could result in higher electrostatic effects between the columns and tetrahedra networks reducing the impedance in the lattices. On this motivation, Bi13-xTexMo4-xV1+xO34 (0 ≤ x < 2.5) solid-solutions were synthesized to investigate the changes of band energies and its activities on photo-degradation. The precursor films could be coated by the colloidal sols, which were dried and then sintered to get the final loosely aggregated particles. Rietveld refinements were applied to investigate the structure. UV–vis absorption concluded that Te4+/V5+ cation substitutions could greatly modify the band gap of Bi13-xTexMo4-xV1+xO34, i.e., the band energies processed a monotonic decrease with the increase of the substitution concentration. Consequently, the cation substituted samples could harvest more visible light in longer-wavelength region being favorable for photocatalysis performances. This was verified by RhB photodegradation in presence of Bi13-xTexMo4-xV1+xO34 under visible-light irradiation (>420 nm). To elucidate photocatalysis mechanisms, XPS, luminescence and lifetime were measured. The improved photocatalysis was related with the microstructure changes and the characteristics such as the multivalent V and Mo ions, longer lifetimes of light-induced charges. |
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Bandgap narrowing of Bi<ce:inf loc="post">13−x</ce:inf>Te<ce:inf loc="post">x</ce:inf>Mo<ce:inf loc="post">4−x</ce:inf>V<ce:inf loc="post">1+x</ce:inf>O<ce:inf loc="post">34</ce:inf> (0 ≤ x < 2.5) solid-solutions for enhanced optical absorption and photocatalytic activities |
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Zhou, Guitao Bi, Shala Wei, Donglei Seo, Hyo Jin |
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