Macroporous　nanocrystalline　(Sr,Pb)TiO3　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)TiO3　solid　solutions　showed　enhanced　photocatalytic　activity　for　the　degradation　of　methyl　orange　(MO)　than　pure　SrTiO3　and　an　optimum　performance　was　observed　for　Sr19/32Pb3/32TiO3.　The　possible　mechanism　for　the　enhanced　photocatalytic　activity　on　(Sr,Pb)TiO3　solid　solutions　was　proposed.　(c)　2007　Elsevier　Ltd.　All　rights　reserved.