High photocatalytic performance of bismuth phosphate and corresponding photodegradation mechanism of Rhodamine B
Submicronic $ BiPO_{4} $ particles (BiP), synthesized via solid-state reaction process at 500 °C, have shown high-performing photocatalytic activity towards Rhodamine B (RhB) degradation under UV irradiation. To better evidence these observed high performances, other commercial particles of $ TiO_{2} $, ZnO, and $ Bi_{2} $$ O_{3} $ were used for comparisons. X-ray diffraction (XRD) was used to characterize all polycrystalline phases. The as-synthesized BiP was single phase crystallizing in a monoclinic structure with space group $ P2_{1} $/n. The scanning electron microscopy (SEM) analyses of all samples allowed comparing the different average crystallite sizes. The photodegradation of RhB aqueous solution was studied as a function of time, successively in presence of the BiP, $ TiO_{2} $, ZnO, and $ Bi_{2} $$ O_{3} $ photocatalysts. The well-crystallized submicron BiP particles exhibit the highest apparent rate constants compared to commercial materials. The observed photoluminescence emission of these BiP particles under UV excitation can be attributed to specific surface defects. The photocatalytic degradation mechanism of RhB has been proposed in detail using a variety of analytical techniques. Graphical abstract.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:48 |
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| Enthalten in: |
Research on chemical intermediates - 48(2022), 8 vom: 17. Juni, Seite 3315-3334 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Bouddouch, A. [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Monoclinic BiPO |
| Anmerkungen: |
© The Author(s), under exclusive licence to Springer Nature B.V. 2022 |
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| doi: |
10.1007/s11164-022-04762-1 |
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| 520 | |a Submicronic $ BiPO_{4} $ particles (BiP), synthesized via solid-state reaction process at 500 °C, have shown high-performing photocatalytic activity towards Rhodamine B (RhB) degradation under UV irradiation. To better evidence these observed high performances, other commercial particles of $ TiO_{2} $, ZnO, and $ Bi_{2} $$ O_{3} $ were used for comparisons. X-ray diffraction (XRD) was used to characterize all polycrystalline phases. The as-synthesized BiP was single phase crystallizing in a monoclinic structure with space group $ P2_{1} $/n. The scanning electron microscopy (SEM) analyses of all samples allowed comparing the different average crystallite sizes. The photodegradation of RhB aqueous solution was studied as a function of time, successively in presence of the BiP, $ TiO_{2} $, ZnO, and $ Bi_{2} $$ O_{3} $ photocatalysts. The well-crystallized submicron BiP particles exhibit the highest apparent rate constants compared to commercial materials. The observed photoluminescence emission of these BiP particles under UV excitation can be attributed to specific surface defects. The photocatalytic degradation mechanism of RhB has been proposed in detail using a variety of analytical techniques. Graphical abstract | ||
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