Mössbauer and photocatalytic studies of CaFe2O4 nanoparticle-containing aluminosilicate prepared from domestic waste simulated slag
| Autor: | Ahmad Salah Ali, Kiyoshi Nomura, S. Ishikawa, Svetozar Musić, Zoltán Homonnay, Stjepko Krehula, Paul A. Bingham, Shiro Kubuki, Alex Scrimshire, Erno Kuzmann, Mira Ristić |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Slag Nanoparticle 010403 inorganic & nuclear chemistry 01 natural sciences Pollution Decomposition 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Reaction rate constant Nuclear Energy and Engineering chemistry Chemical engineering Aluminosilicate visual_art 57Fe Mössbauer spectroscopy Photocatalytic effect Visible-ligh Nanoparticles CaFe2O4 Mössbauer spectroscopy visual_art.visual_art_medium Photocatalysis Radiology Nuclear Medicine and imaging Spectroscopy Methylene blue |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 322:1469-1476 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | The relationship between local structure and visible-light activated photocatalytic effect of simulated domestic waste slag glass–ceramics (R-NaWSFe) was investigated. The largest pseudo-first-order rate constant of 9.75 × 10−3 min−1 was estimated for methylene blue decomposition test under the visible-light irradiation using R-NaWSFe with additional 30 mass% of Fe2O3 heat-treated at 900 °C for 100 min. The reason for the high photoactivity of this sample was mainly due to nanoparticles of CaFe2O4 and α-Fe2O3 confirmed by the Mössbauer spectrum measured at 77 K. It is concluded that the nanoparticles of magnetic components in silica are essential for exhibiting visible-light activated catalytic effect. |
| Databáze: | OpenAIRE |
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