Crystal Design and Photoactivity of TiO<sub>2</sub> Nanorod Template Decorated with Nanostructured Bi<sub>2</sub>S<sub>3</sub> Visible Light Sensitizer
In this study, TiO<sub>2</sub>-Bi<sub>2</sub>S<sub>3</sub> composites with various morphologies were synthesized through hydrothermal vulcanization with sputtering deposited Bi<sub>2</sub>O<sub>3</sub> sacrificial layer method on the TiO<...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
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| Series: | International Journal of Molecular Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1422-0067/23/19/12024 |
| Summary: | In this study, TiO<sub>2</sub>-Bi<sub>2</sub>S<sub>3</sub> composites with various morphologies were synthesized through hydrothermal vulcanization with sputtering deposited Bi<sub>2</sub>O<sub>3</sub> sacrificial layer method on the TiO<sub>2</sub> nanorod templates. The morphologies of decorated Bi<sub>2</sub>S<sub>3</sub> nanostructures on the TiO<sub>2</sub> nanorod templates are controlled by the duration of hydrothermal vulcanization treatment. The Bi<sub>2</sub>S<sub>3</sub> crystals in lumpy filament, nanowire, and nanorod feature were decorated on the TiO<sub>2</sub> nanorod template after 1, 3, and 5 h hydrothermal vulcanization, respectively. Comparatively, TiO<sub>2</sub>-Bi<sub>2</sub>S<sub>3</sub> composites with Bi<sub>2</sub>S<sub>3</sub> nanowires exhibit the best photocurrent density, the lowest interfacial resistance value and the highest photodegradation efficiency towards Rhodamine B solution. The possible Z-scheme photoinduced charge separation mechanism and suitable morphology of Bi<sub>2</sub>S<sub>3</sub> nanowires might account for the high photoactivity of TiO<sub>2</sub> nanorod-Bi<sub>2</sub>S<sub>3</sub> nanowire composites. |
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| ISSN: | 1661-6596 1422-0067 |