WO3 Nanorods Supported on Mesoporous TiO2 Nanotubes as One-Dimensional Nanocomposites for Rapid Degradation of Methylene Blue under Visible Light Irradiation
| Autor: | T. Manovah David, M. Rebeca Sofiya Joice, P. Wilson |
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| Rok vydání: | 2019 |
| Předmět: |
Anatase
Materials science Nanocomposite 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy Bathochromic shift Nanorod Physical and Theoretical Chemistry 0210 nano-technology Mesoporous material Photodegradation Luminescence Monoclinic crystal system |
| Zdroj: | The Journal of Physical Chemistry C. 123:27448-27464 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.9b05647 |
| Popis: | One dimensional (1D) WO3 nanorod (WR)/TiO2 nanotube (TN) composites were fabricated by employing a simple impregnation method for the photodegradation of methylene blue (MB), where WRs and TNs were synthesized by the hydrothermal method and rapid breakdown anodization, respectively. As a comparative study for the photodegradation process, nanocomposites of WRs/TiO2 Degussa P-25 nanoparticles (TPs) were prepared utilizing the same impregnation approach. X-ray diffraction studies confirm the structure of WO3 and TiO2 to be monoclinic and anatase, respectively. Morphological studies revealed the formation of 1D nanocomposite with a mesoporous surface having an increased presence of hydroxyl groups, as indicated by Brunauer–Emmett–Teller and electron paramagnetic resonance analyses. Ultraviolet–diffuse reflectance spectroscopy and photo luminescence profiles displayed a bathochromic shift in wavelength along with a reduction in the electron hole pair recombination rate, signifying the activation of the nanoco... |
| Databáze: | OpenAIRE |
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