Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes
Three-dimensional mesoporous TiO<sub>2</sub> scaffolds of anatase phase possess inherent eximious optical behavior that is beneficial for photoelectrodes used for solar energy conversion applications. In this regard; substantial efforts have been devoted to maximizing the UV and/or visib...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/e31dfb9a680a4576bcac7eb7d78dccfd |
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| Sumario: | Three-dimensional mesoporous TiO<sub>2</sub> scaffolds of anatase phase possess inherent eximious optical behavior that is beneficial for photoelectrodes used for solar energy conversion applications. In this regard; substantial efforts have been devoted to maximizing the UV and/or visible light absorption efficiency; and suppressing the annihilation of photogenerated charged species; in pristine mesoporous TiO<sub>2</sub> structures for improved solar illumination conversion efficiency. This study provides fundamental insights into the use of Mxene functionalized mesoporous TiO<sub>2</sub> as a photoelectrode. This novel combination of Mxene functionalized TiO<sub>2</sub> electrodes with and without TiCl<sub>4</sub> treatment was successfully optimized to intensify the process of photon absorption; charge segregation and photocurrent; resulting in superior photoelectrode performance. The photocurrent measurements of the prepared photoelectrodes were significantly enhanced with increased contents of Mxene due to improved absorption efficiency within the visible region; as verified by UV–Vis absorption spectroscopy. The anatase phase of TiO<sub>2</sub> was significantly augmented due to increased contents of Mxene and postdeposition heat treatments; as evidenced by structural analysis. Consequently; an appreciable coverage of well-developed grains on the FTO surface was observed in SEM images. As such; these newly fabricated conductive mesoporous TiO<sub>2</sub> photoelectrodes are potential candidates for photoinduced energy conversion and storage applications. |
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