Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application
Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initia...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ji, Xiaohui [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Umfang: |
11 |
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| Übergeordnetes Werk: |
Enthalten in: Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration - Rey, F. ELSEVIER, 2018, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:46 ; year:2020 ; number:9 ; day:15 ; month:06 ; pages:13630-13640 ; extent:11 |
| Links: |
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| DOI / URN: |
10.1016/j.ceramint.2020.02.149 |
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ELV050129287 |
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| 520 | |a Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. | ||
| 520 | |a Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. | ||
| 650 | 7 | |a Band structure |2 Elsevier | |
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| 650 | 7 | |a Heterojunctions |2 Elsevier | |
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| 700 | 1 | |a Zhang, Dan |4 oth | |
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10.1016/j.ceramint.2020.02.149 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001885.pica (DE-627)ELV050129287 (ELSEVIER)S0272-8842(20)30474-0 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Ji, Xiaohui verfasserin aut Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application 2020transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Band structure Elsevier Semiconductor Elsevier Photocatalysis Elsevier Optical properties Elsevier Bismuth Elsevier Heterojunctions Elsevier Wang, Qin oth Lu, Jiu-Fu oth Zhang, Dan oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:9 day:15 month:06 pages:13630-13640 extent:11 https://doi.org/10.1016/j.ceramint.2020.02.149 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 9 15 0615 13630-13640 11 |
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10.1016/j.ceramint.2020.02.149 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001885.pica (DE-627)ELV050129287 (ELSEVIER)S0272-8842(20)30474-0 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Ji, Xiaohui verfasserin aut Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application 2020transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Band structure Elsevier Semiconductor Elsevier Photocatalysis Elsevier Optical properties Elsevier Bismuth Elsevier Heterojunctions Elsevier Wang, Qin oth Lu, Jiu-Fu oth Zhang, Dan oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:9 day:15 month:06 pages:13630-13640 extent:11 https://doi.org/10.1016/j.ceramint.2020.02.149 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 9 15 0615 13630-13640 11 |
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10.1016/j.ceramint.2020.02.149 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001885.pica (DE-627)ELV050129287 (ELSEVIER)S0272-8842(20)30474-0 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Ji, Xiaohui verfasserin aut Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application 2020transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Band structure Elsevier Semiconductor Elsevier Photocatalysis Elsevier Optical properties Elsevier Bismuth Elsevier Heterojunctions Elsevier Wang, Qin oth Lu, Jiu-Fu oth Zhang, Dan oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:9 day:15 month:06 pages:13630-13640 extent:11 https://doi.org/10.1016/j.ceramint.2020.02.149 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 9 15 0615 13630-13640 11 |
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10.1016/j.ceramint.2020.02.149 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001885.pica (DE-627)ELV050129287 (ELSEVIER)S0272-8842(20)30474-0 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Ji, Xiaohui verfasserin aut Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application 2020transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Band structure Elsevier Semiconductor Elsevier Photocatalysis Elsevier Optical properties Elsevier Bismuth Elsevier Heterojunctions Elsevier Wang, Qin oth Lu, Jiu-Fu oth Zhang, Dan oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:9 day:15 month:06 pages:13630-13640 extent:11 https://doi.org/10.1016/j.ceramint.2020.02.149 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 9 15 0615 13630-13640 11 |
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10.1016/j.ceramint.2020.02.149 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001885.pica (DE-627)ELV050129287 (ELSEVIER)S0272-8842(20)30474-0 DE-627 ger DE-627 rakwb eng 333.7 610 VZ 43.12 bkl 43.13 bkl 44.13 bkl Ji, Xiaohui verfasserin aut Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application 2020transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. Band structure Elsevier Semiconductor Elsevier Photocatalysis Elsevier Optical properties Elsevier Bismuth Elsevier Heterojunctions Elsevier Wang, Qin oth Lu, Jiu-Fu oth Zhang, Dan oth Enthalten in Elsevier Science Rey, F. ELSEVIER Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration 2018 Amsterdam [u.a.] (DE-627)ELV000899798 volume:46 year:2020 number:9 day:15 month:06 pages:13630-13640 extent:11 https://doi.org/10.1016/j.ceramint.2020.02.149 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA SSG-OPC-GGO 43.12 Umweltchemie VZ 43.13 Umwelttoxikologie VZ 44.13 Medizinische Ökologie VZ AR 46 2020 9 15 0615 13630-13640 11 |
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Construction of a novel Ca2Bi2O5/α-Bi2O3 semiconductor heterojunction for enhanced visible photocatalytic application |
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Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. |
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Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. |
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Bi3+-containing compounds have been intensively investigated for their potential application as photocatalysts for degrading pollutants and splitting water. In this work, a Ca2Bi2O5/α-Bi2O3 heterojunction photocatalyst was successfully prepared via the facile sol–gel method. The excess of the initial Bi raw material can result in the Ca2Bi2O5/α-Bi2O3 heterojunction of the final products. The as-synthesized nanoparticles were investigated via X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive spectrometry, UV–Vis optical absorption, and X-ray photoelectron spectroscopy. The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. The present results can serve as reference for investigating the optical properties of Bi semiconductors. |
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The band energy of the Ca2Bi2O5 substrate semiconductor was 2.49 eV and characterized with a direct transition nature. The photocatalytic effect on the photodegradation of Rhodamine B solutions was evaluated. Ca2Bi2O5/α-Bi2O3 heterojunctions showed improved photocatalytic abilities compared with single Ca2Bi2O5 and α-Bi2O3 under viable light irradiation. The mechanism was discussed in terms of the microstructure, luminescence intensities, and decay curves (lifetimes). The photo-produced electrons and holes can be adequately separated in Ca2Bi2O5/α-Bi2O3 heterojunctions ensuring its photocatalytic activities. 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ELSEVIER</subfield><subfield code="t">Soil and water bioengineering: Practice and research needs for reconciling natural hazard control and ecological restoration</subfield><subfield code="d">2018</subfield><subfield code="g">Amsterdam [u.a.]</subfield><subfield code="w">(DE-627)ELV000899798</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:46</subfield><subfield code="g">year:2020</subfield><subfield code="g">number:9</subfield><subfield code="g">day:15</subfield><subfield code="g">month:06</subfield><subfield code="g">pages:13630-13640</subfield><subfield code="g">extent:11</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.ceramint.2020.02.149</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">43.12</subfield><subfield code="j">Umweltchemie</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">43.13</subfield><subfield code="j">Umwelttoxikologie</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.13</subfield><subfield code="j">Medizinische Ökologie</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">46</subfield><subfield code="j">2020</subfield><subfield code="e">9</subfield><subfield code="b">15</subfield><subfield code="c">0615</subfield><subfield code="h">13630-13640</subfield><subfield code="g">11</subfield></datafield></record></collection>
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