Silver-Decorated TiO2 Inverse Opal Structure for Visible Light-Induced Photocatalytic Degradation of Organic Pollutants and Hydrogen Evolution
| Autor: | Salvador Eslava, Jyrki M. Mäkelä, Khai Pham, Paxton Juuti, Filipp Temerov, Santosh Kumar, Elena V. Grachova, Jarkko J. Saarinen |
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| Přispěvatelé: | Tampere University, Physics, Research group: Aerosol Synthesis |
| Rok vydání: | 2020 |
| Předmět: |
Anatase
Materials science Scanning electron microscope 215 Chemical engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 114 Physical sciences 01 natural sciences Silver nanoparticle 0104 chemical sciences symbols.namesake X-ray photoelectron spectroscopy Chemical engineering Transmission electron microscopy Photocatalysis symbols General Materials Science 0210 nano-technology Raman spectroscopy Visible spectrum |
| Zdroj: | ACS Applied Materials & Interfaces. 12:41200-41210 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.0c08624 |
| Popis: | TiO2 inverse opal (TIO) structures were prepared by the conventional wet chemical method, resulting in well-formed structures for photocatalytic activity. The obtained structures were functionalized with liquid flame spray-deposited silver nanoparticles (AgNPs). The nanocomposites of TIO and AgNPs were extensively characterized by various spectroscopies such as UV, Raman, X-ray diffraction, energy-dispersive spectroscopy, and X-ray photoelectron spectroscopy combined with microscopic methods such as scanning electron microscopy, transmission electron microscopy (TEM), and high-resolution TEM. The characterization confirmed that high-quality heterostructures had been fabricated with evenly and uniformly distributed AgNPs. Fabrication of anatase TiO2 was confirmed, and formation of AgNPs was verified with surface plasmon resonant properties. The photocatalytic activity results measured in the gas phase showed that deposition of AgNPs increases photocatalytic activity both under UVA and visible light excitation; moreover, enhanced hydrogen evolution was demonstrated under visible light. acceptedVersion |
| Databáze: | OpenAIRE |
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