Controllable Synthesis of Modified Porous Anatase TiO2 with High Photocatalytic Activity
| Autor: | Cheng Qiu, Meiqing Fan, Hong-Xia Zhao, Xiao-Fei Zhang, Bo Ren, Xu Zeng, Heng-Yi Yuan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Anatase
Materials science Biomedical Engineering Bioengineering 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Adsorption Chemical engineering Desorption Specific surface area PEG ratio Photocatalysis General Materials Science Crystallite 0210 nano-technology Mesoporous material |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 21:5742-5748 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2021.19492 |
| Popis: | In this study, we added ZrO2 and Y2O3 to stabilize the anatase TiO2 phase at higher temperatures. Composite mesoporous TiO2/ZrO2/Y2O3 (TZY) oxides were prepared by a sol-gel method, and triblockcopolymer P123 and PEG was used as templates. The properties of the synthesized materials were characterized using X-Ray diffraction (XRD), Raman scattering, N2 adsorption/desorption, and UV-Visible spectrophotometry (UV-Vis) methods et al. The samples prepared using P123 and PEG as double-template exhibited smaller particles and a higher specific surface area than the samples prepared using P123 and PEG as single-template. Furthermore, crystal phase transition from anatase to rutile occurred later in the case of the double-template method. After introducing ZrO 2and Y2O3, the crystal phase transition and the growth of crystallites were severely suppressed. The results indicated that the RhB degradation efficiency for the double-template method was 99.24%, while the RhB degradation efficiency with TZY/P123 and TZY/PEG samples was 97.43 and 98.18%, respectively. |
| Databáze: | OpenAIRE |
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