<abstract xmlns="http://www.w3.org/1999/xhtml"> Photocatalytic activity of TiO2 and ZnO nanopowders is studied depending on the morphology, grain sizes and method of synthesizing. Photocatalysis of the prepared powders was evaluated by degradation of the methylene blue aqueous solution. Absorbance spectra (190-100 nm) were measured during exposure of the solution to UV light. The relationships between the photocatalytic activity and the particle size, crystal polymorph phases and grain morphology were analyzed. The photocatalytic activity of prepared TiO2 nanopowders has been found to depend of the anatase-to-rutile phase ratio. Comparison is given for the photocatalytic activity of ZnO nanopowders prepared by sol-gel and solar physical vapour deposition (SPVD) methods</abstract>

Photocatalytic activity of TiO2 and ZnO nanopowders is studied depending on the morphology, grain sizes and method of synthesizing. Photocatalysis of the prepared powders was evaluated by degradation of the methylene blue aqueous solution. Absorbance spectra (190-100 nm) were measured during exposure of the solution to UV light. The relationships between the photocatalytic activity and the particle size, crystal polymorph phases and grain morphology were analyzed. The photocatalytic activity of prepared TiO2 nanopowders has been found to depend of the anatase-to-rutile phase ratio. Comparison is given for the photocatalytic activity of ZnO nanopowders prepared by sol-gel and solar physical vapour deposition (SPVD) methods

Photocatalitic Properties of Tio2 and ZnO Nanopowders / Tio2 un Zno Nanopulveru Fotokatalitiskās Īpašības

Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., LV-1063, Riga, LATVIA

Institute of Inorganic Chemistry, Riga Technical University 34 Miera Str., Salaspils, LV-2169, LATVIA

CNRS Laboratoire Procedes, Materiaux et Energie solaire (PROMES), Font Romeu 66120, France

Latvian Journal of Physics and Technical Sciences

Photocatalitic Properties of Tio and ZnO Nanopowders / Tio un Zno Nanopulveru Fotokatalitiskās Īpašības

Photocatalytic activity of TiO2 and ZnO nanopowders is studied depending on the morphology, grain sizes and method of synthesizing. Photocatalysis of the...

Photocatalitic Properties of Tio₂ and ZnO Nanopowders / Tio₂ un Zno Nanopulveru Fotokatalitiskās Īpašības

Publié en ligne: 17 sept. 2013

Pages: 48 - 55

DOI: https://doi.org/10.2478/lpts-2013-0025

This content is open access.