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Publication Detail
Optical and photocatalytic behaviours of nanoparticles in the Ti-Zn-O binary system
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Goodall JBM, Kellici S, Illsley D, Lines R, Knowles JC, Darr JA
  • Publication date:
  • Pagination:
    31799, 31809
  • Journal:
    RSC Advances
  • Volume:
  • Issue:
  • Status:
Continuous hydrothermal flow synthesis (CHFS) has been used as a rapid and clean, synthetic method to produce a range of crystalline nanoparticles in the Ti-Zn-O binary system. The nanopowders were prepared from aqueous solutions of titanium(iv) bis(ammonium lactato)dihydroxide (TIBALD) and hydrated zinc nitrate, respectively, using a CHFS reactor which uses superheated water (at 400°C and 24.1 MPa) as a reagent and crystallizing medium. The resulting nanopowders were heat-treated at 850°C for five hours in air to give photoactive semiconductor mixtures of rutile and zinc oxide and/or zinc titanates. The as-prepared powders and their corresponding heat-treated mixed phase photocatalysts were characterized using powder X-ray synchrotron diffraction, transmission electron microscopy, BET surface area measurement, X-ray photoelectron spectroscopy and UV-Vis spectrophotometry. Because of the interest for these materials in UVA and UVB attenuating materials, the UV-Vis profiles of the nanocomposites and solid solutions were studied. Photocatalytic activity of the samples towards the decolourisation of methylene blue dye was also assessed. © 2014 the Partner Organisations.
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