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- W2957664333 startingPage "115798" @default.
- W2957664333 abstract "Abstract Poor visible light absorption capability and low photogenerated carriers’ separation efficiency are the main obstacles to the advanced photocatalysis performance of La2Ti2O7. This work rationally designed AgBr/La2Ti2O7 hierarchical heterojunctions using hydrothermal and deposition–precipitation methods. The heterostructrue is consist of AgBr nanoparticles anchored on the two dimension La2Ti2O7 nanosheets. UV/Vis diffuse reflection spectrometry revealed that the coupled AgBr nanoparticles significantly enhanced the visible light absorption of La2Ti2O7. Remarkably, the AgBr/La2Ti2O7 hierarchical photocatalysts exhibited boosted visible-light photocatalytic activity for the degradation of Rhodamine B and tetracycline than that of both AgBr and La2Ti2O7. The extraordinary visible-light photocatalytic activity is attributed to the effective separation efficiency of photogenerated electron-hole pairs between AgBr and La2Ti2O7, which is demonstrated by photocurrent response testing and photoluminescence spectroscopy. Because of the expected interfacial charge separation function of coupled AgBr, more active species are demonstrated at the surface of La2Ti2O7 to promote the photocatalytic reaction. The active radical trapping experiments demonstrated that the O2– radicals are the major active species during the photocatalytic processing. Furthermore, the possible mechanism for the enhanced visible-light photocatalytic performance were investigated and proposed." @default.
- W2957664333 created "2019-07-23" @default.
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- W2957664333 date "2019-12-01" @default.
- W2957664333 modified "2023-10-18" @default.
- W2957664333 title "Fabrication of AgBr/La2Ti2O7 hierarchical heterojunctions: Boosted interfacial charge transfer and high efficiency visible-light photocatalytic activity" @default.
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- W2957664333 doi "https://doi.org/10.1016/j.seppur.2019.115798" @default.
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