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Synthesis of TiO with controllable ratio of anatase to rutile

Journal of Materials Chemistry A, ISSN: 2050-7496, Vol: 2, Issue: 24, Page: 9291-9297
2014
  • 59
    Citations
  • 0
    Usage
  • 47
    Captures
  • 0
    Mentions
  • 19
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    59
    • Citation Indexes
      59
  • Captures
    47
  • Social Media
    19
    • Shares, Likes & Comments
      19
      • Facebook
        19

Article Description

Dual-phase TiO photocatalysts with controllable ratio of anatase to rutile were synthesized, and evaluated using the degradation of Rhodamine B (RhB) under UV light irradiation. The TiO samples prepared by one-pot redox reactions in the presence of graphene oxide (GO) were characterized by X-ray diffraction, physical adsorption-desorption of nitrogen, and scanning/transmission electron microscope techniques. Results showed that the weight percentage of anatase and rutile in the resulting TiO samples linearly changed with the starting mass ratio of TiCl over GO (R). The formed reduced GO (rGO) was completely removed by calcination at 450 °C, leaving behind pure crystallized TiO materials. The two-dimensional rGO sheet inhibited the aggregation of TiO nanoparticles, and the oxygen functional groups benefitted the formation of the anatase phase especially at low R. TiO with 55% of anatase and 45% of rutile displayed the highest photoactivity due to its unique hierarchical structures, including anisotropically shaped structure of rutile nanorods, intimate interfacial contact between anatase and rutile, and the dense interconnections among anatase particles, which retarded the electron-hole recombination and enhanced the photocatalytic performance. © 2014 the Partner Organisations.

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