2017
DOI: 10.1016/j.ceramint.2017.07.143
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Enhancing the photocatalytic activity of the perovskite-based intergrowth oxide Sr3.2La0.8Fe1.5Co1.5O10-δ with Ca substitution

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Cited by 20 publications
(10 citation statements)
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“…Ruddlesden–Popper (RP) oxides with the general formula A n +1 B n O 3 n +1 (with A being a large, low-charge cation and B being a small cation with usually higher charge) are known for their vast variety of physical properties like high ionic transport, , photocatalytic activity, ferroelectricity , or unusual magnetism. The most prominent example of this family is perhaps La 2– x Ba x CuO 4 , found to be superconducting in 1987 by Bednorz and Müller, leading to the discovery of superconductivity above the boiling of nitrogen in YBa 2 Cu 3 O 7− x . Cationic substitutions have widely been used to tailor the physical properties of RP oxides.…”
Section: Introductionmentioning
confidence: 99%
“…Ruddlesden–Popper (RP) oxides with the general formula A n +1 B n O 3 n +1 (with A being a large, low-charge cation and B being a small cation with usually higher charge) are known for their vast variety of physical properties like high ionic transport, , photocatalytic activity, ferroelectricity , or unusual magnetism. The most prominent example of this family is perhaps La 2– x Ba x CuO 4 , found to be superconducting in 1987 by Bednorz and Müller, leading to the discovery of superconductivity above the boiling of nitrogen in YBa 2 Cu 3 O 7− x . Cationic substitutions have widely been used to tailor the physical properties of RP oxides.…”
Section: Introductionmentioning
confidence: 99%
“…It is worthy to note that the formation of these defects such as oxygen vacancies or trapping centers is suitable for photocatalysis because these oxygen vacancies diminish the rate of electron-hole recombination (Wu et al, 2016). As reported by Oliva et al (2017), higher photocatalytic degradation was observed as the Ca content increased. The layered perovskites (SCLFCO sample) with x 0.8 produced a total degradation of MB (100%) after 150 min at a pH 6.0, whereas the undoped sample with x 0 showed only a maximum degradation of 27% after 300 min.…”
Section: Lanthanum-based Perovskites In Photocatalysismentioning
confidence: 85%
“…x La 0.8 Fe 1.5 Co 1.5 O 10-δ (Oliva et al, 2017) were studied by monitoring the degradation of methylene blue (MB) dye. This Ca-doped layered perovskite belonging to Ruddlesden-Popper (R-P) family exhibited increase in absorbance due to the creation of defects such as atomic dislocation induced by the replacement of Sr by Ca.…”
Section: Lanthanum-based Perovskites In Photocatalysismentioning
confidence: 99%
“…68−70 The influence of the Ca 2+ doping amount on the photocatalytic activity of Sr 3.2−x Ca x La 0.8 Fe 1.5 Co 1.5 O 10−δ (x = 0, 0.2, 0.4, and 0.8) for MB degradation has been investigated. 68 Ca 2+ doping substantially enhanced the photocatalytic activity of pristine Sr 3.2 La 0.8 Fe 1.5 Co 1.5 O 10−δ as a result of the suppressed band gap, improved sunlight absorption capability, reduced particle size, and higher oxygen amount in the RP perovskites, which enhanced the electron conductivity at room temperature, thereby reducing the possibility of electron−hole pair recombination. Among various Ca 2+ -doped RP perovskites, Sr 70 The first-principles calculation showed a similar decreasing trend in the band gap, agreeing well with the experimental results.…”
Section: Advances In Rp Perovskite Oxides In Photocatalysismentioning
confidence: 99%