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- W1569261608 abstract "The preparation of Ti1−xSnxO2 nanocrystalline photocatalysts in reverse microemulsions is reported in this work. The obtained materials have been characterised by total reflection X-ray fluorescence (TXRF), X-ray diffraction (XRD) and Raman and UV–vis spectroscopies. Very good accordance between calculated and obtained compositions is observed. Undoped TiO2 prepared in this way crystallises in the anatase phase. Tin-doped anatase is formed with x < 0.05, while both anatase and rutile phases crystallise when x ≥ 0.05. When both phases coexist, a preferential doping of rutile seems to occur. When x = 0.10, a multiphase mixture containing TiO2(anatase), TiO2(rutile) and SnO2 was formed. No significant modification of the band gap is found in any case. The photocatalytic activity of the obtained catalysts is compared employing the trichloroethylene photocatalytic degradation as a test reaction. The beneficial effect of Sn4+ in the activity of TiO2 appears to be related to the formation of anatase–rutile mixtures, leading to the highest specific photocatalytic activity in the sample of composition Ti0.93Sn0.07O2, with anatase:rutile ratio close to 3." @default.
- W1569261608 created "2016-06-24" @default.
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- W1569261608 date "2009-05-01" @default.
- W1569261608 modified "2023-10-06" @default.
- W1569261608 title "Synthesis of Ti1−Sn O2 nanosized photocatalysts in reverse microemulsions" @default.
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- W1569261608 doi "https://doi.org/10.1016/j.cattod.2008.10.024" @default.
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