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Article Abstract
Three kinds of Al-TiO samples and pure TiO samples were synthesized via a modified polyacrylamide gel route using different aluminum salts, including Al(SO)∙18HO, AlCl, and Al(NO)∙9HO under identical conditions. The influence of different aluminum salts on the phase purity, morphologies, thermal stability of anatase and photocatalytic properties of the as-prepared Al-TiO nanoparticles were studied. The energy gap (Eg) of Al-TiO nanoparticles decreases due to Al ion doping into TiO. The photocatalytic activities of the Al-TiO samples were investigated by the degradation of acid orange 7 dye in aqueous solution under simulated solar irradiation. The Al-TiO nanoparticles prepared from Al(NO)∙9HO exhibit the best photocatalytic activity among the four kinds of samples, followed in turn by the Al-TiO nanoparticles prepared with AlCl, Al(SO)∙18HO and pure TiO. The different performances are attributed to complex effects of Eg, particle size, surface morphology, phase purity and the defect sites of the Al-TiO nanoparticles.
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| http://dx.doi.org/10.1038/s41598-017-08216-2 | DOI Listing |
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