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• W2955272203 abstract "In this work the flower-like hierarchical structures (HS) based on 3D pristine ZnO, ZnO:Eu3+ and ZnO:Eu3+@Au were successfully obtained by a template-free solvothermal and deposition-precipitation method. The decolorization/photodegradation of these structures towards model organic dye (rhodamine 6G) was studied. The synthesized ZnO-based HS were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis and photoluminescence (PL) spectroscopies. The proposed synthesis approaches allow to obtain highly crystalline 3D ZnO, ZnO:Eu3+ and ZnO:Eu3+@Au composites. Results of scanning microscopy show that ZnO flower-like HS are assemblies from smaller components, forming larger ones, the whole ZnO structure was approximately 3 μm. Au nanoparticles (size ∼ 10 nm) are successfully deposited on ZnO HS surface. Luminescent studies show that ZnO is an ideal matrix for incorporation of Eu3+ ions in broad concentration range (Eu3+ = 1.0 at%–5.0 at%) with an efficient red luminescence. The strong UV emission in ZnO, as well as ZnO:Eu3+ HS is observed under 325 nm excitation. Doping of ZnO HS matrix by Eu3+ ions leads to the red shift of deep level emission peak (DLE). The PL intensity reaches the maximum up to 5 at% Eu3+. The photocatalytic properties of ZnO and ZnO:Eu3+@Au HS were investigated under UV–Vis light irradiation towards rhodamine 6G. The obtained results demonstrate the synergetic effect of the deposited gold nanoparticles and Eu3+ doping on photocatalytic activity of ZnO:Eu3+@Au HS in comparison to pristine ZnO and ZnO:Eu3+ HS." @default.
• W2955272203 created "2019-07-12" @default.
• W2955272203 creator A5007108228 @default.
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• W2955272203 date "2020-01-01" @default.
• W2955272203 modified "2023-09-29" @default.
• W2955272203 title "Enhanced photodegradation activity of ZnO:Eu3+ and ZnO:Eu3+@Au 3D hierarchical structures" @default.
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• W2955272203 doi "https://doi.org/10.1016/j.jre.2018.12.020" @default.
• W2955272203 hasPublicationYear "2020" @default.
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