Abstract
Macroporous nanocrystalline (Sr,Pb)TiO 3 solid solutions were prepared by a facile self-propagating combustion method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), energy dispersive X-ray spectrum (EDS) and X-ray photoelectron spectroscopy (XPS). (Sr,Pb)TiO 3 solid solutions showed enhanced photocatalytic activity for the degradation of methyl orange (MO) than pure SrTiO 3 and an optimum performance was observed for Sr 29/32Pb 3/32TiO 3. The possible mechanism for the enhanced photocatalytic activity on (Sr,Pb)TiO 3 solid solutions was proposed.
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