Mössbauer and photocatalytic studies of CaFe2O4 nanoparticle-containing aluminosilicate prepared from domestic waste simulated slag

A. S. Ali, S. Ishikawa, K. Nomura, E. Kuzmann, Z. Homonnay, A. Scrimshire, P. A. Bingham, S. Krehula, M. Ristić, S. Musić, S. Kubuki

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
JournalJournal of Radioanalytical and Nuclear Chemistry
DOIs
Publication statusAccepted/In press - Jan 1 2019

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Keywords

  • Fe Mössbauer spectroscopy
  • CaFeO
  • Nanoparticles
  • Photocatalytic effect
  • Visible-light
  • α-FeO

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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