Synthesis of Lead-Doped SrTiO3 Perovskite Type Oxides and Their Photocatalytic Activity Under Visible Light Irradiation
Pure and lead-doped SrTiO3 perovskite type oxides were successfully synthesized by sol–gel method and characterized by XRD, SEM and DRS. From the results of XRD, the metal replacement with the Pb ion on the crystal lattice does not change the high crystallinity of the perovskite structure. UV-vis DRS analysis shows that Pb was in situ doped in the lattice of SrTiO3 and the absorption band shifted to a higher wavelength on the Pb-doped SrTiO3 sample compared to the pure SrTiO3 sample. We also investigated the photocatalytic activity of Pb-doped SrTiO3 for the decomposition of Rhodamine B under visible light irradiation. From the results of photocatalytic decomposition of RhB, a doping of lead into SrTiO3 perovskite oxides enhanced the photocatalytic activity under visible light irradiation.
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Document Type: Research Article
Affiliations: Department of Chemical Engineering, Pukyong National University, 365 Shinseonro, Busan, 48547, Korea
Publication date: February 1, 2019
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