Facile fabrication of a novel BiPO4 phase junction with enhanced photocatalytic performance towards aniline blue degradation
| Autor: | Ahmed S. Helal, Farida M. S. E. El-Dars, Said M. El-Sheikh, Ahmed B. Azzam, Bahaa Ahmed Salah, R.A. Geioushy |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Rietveld refinement General Chemical Engineering Hexagonal phase 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention X-ray photoelectron spectroscopy Chemical engineering law Phase (matter) Photocatalysis Calcination Nanorod 0210 nano-technology Monoclinic crystal system |
| Zdroj: | RSC Advances. 9:17246-17253 |
| ISSN: | 2046-2069 |
| Popis: | A novel BiPO4 photocatalyst has been fabricated via a facile precipitation route using dimethyl sulfoxide (DMSO) as a solvent. The physical and chemical properties of the BiPO4 photocatalyst material were analyzed using XRD, Rietveld refinements XRD, FE-SEM, TEM, HR-TEM, EDS, XPS, FT-IR, Raman spectra, UV-Vis (DRS), and PL. The results confirm that hexagonal phase BiPO4 (HBIP) nanorods were successfully synthesized. FE-SEM images reveal that the addition of surfactant “CTAB” during preparation can control the surface morphology of BiPO4. The Rietveld refinement technique revealed the formation of a monazite monoclinic (nMBIP) and monoclinic (mMBIP) phase junction resulting from the calcination of HBIP at 500 °C. The photocatalytic behavior of the as-synthesized hexagonal and monoclinic BiPO4 nanostructures towards aniline blue (AB) degradation under UV light was systematically investigated. Among all catalysts, the phase junction (nMBIP–mMBIP) structure demonstrated the highest photocatalytic activity. The degradation rate of AB over the (nMBIP–mMBIP) phase junction structure was 3.4 times higher than that by HBIP. These results suggested that the surface-phase junction provides a synergistic effect for the electron–hole transfer process. |
| Databáze: | OpenAIRE |
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