Visible-light activated photocatalytic effect of glass and glass ceramic prepared by recycling waste slag with hematite

Shiori Ishikawa, Balazs Kobzi, Kosuke Sunakawa, Szilvia Nemeth, Attila Lengyel, E. Kuzmann, Z. Homonnay, Tetsuaki Nishida, Shiro Kubuki

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Abstract

A relationship between the local structure and the visible-light activated photocatalytic effect was investigated in the glass and glass ceramics prepared by recycling waste slag, which was discharged from a Tokyo Household Garbage Combustion Plant. For the preparation of a homogeneous sample of waste slag recycled glass, (WSRG), 10 wt% of Na2CO3 and 10-50 wt% of Fe2O3 were added. 57Fe-Mössbauer spectra of WSRG recorded at liquid nitrogen temperature showed three types of magnetic hfs; one due to FeII(Oh) with δ of 1.21 mm s-1 and Hint of 46.7 T, one due to FeIII(Oh) with δ of 0.46 mm s-1 and Hint of 44.1 T, and the other due to FeIII(Td) with δ of 0.38 mm s-1 and Hint of 47.8 T. They were superimposed on a relaxation spectrum due to superparamagnetic hematite. Methylene blue (MB) degradation test with 40 mg of the heat treated WSRG (50 wt% Fe2O3), under the visible-light irradiation for 6 h showed a marked decrease in the concentration of MB from 20 to 7.7 μmol L-1 with a rate constant (k) of 2.7×10-3 min-1 which was close to the k, 9.26×10-3 min- 1, recently obtained in 15Na2O·15CaO·40Fe2O3· 11Al2O3·19SiO2 glass.

Original languageEnglish
Pages (from-to)535-544
Number of pages10
JournalPure and Applied Chemistry
Volume89
Issue number4
DOIs
Publication statusPublished - Apr 1 2017

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Keywords

  • Mössbauer spectroscopy
  • SSC-2016
  • Visible-light activated photocatalytic effect
  • Waste slag recycled glass

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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