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Controllable synthesis of multi-morphological SrWO4:Ln3+ (Ln = Eu, Tb) hierarchical structures and their luminescence properties

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Abstract

Multi-morphological Ln3+ (Ln = Eu, Tb) doped SrWO4 hierarchical structures were successfully synthesized via a hydrothermal method. The phase structure, morphology and luminescence properties of the as-prepared samples were characterized by XRD, SEM, TEM, PL spectroscopy and lifetime measurements. The results indicate that the alteration of synthesis conditions has almost no effect on the phase structure, but has a prominent effect on the morphology of the obtained samples, such as the molar ratio of Sr2+ to WO42− from 1 : 3 to 6 : 1 (split spheres, dumbbell-like, rod-like, nanosheets), addition of Na3C6H5O7·2H2O from 0.1 to 0.5 g (microspheres, rice-like), addition of Na2EDTA·2H2O from 0.01 to 0.3 g (spheres, split spheres, peanut-like, drum-like, ellipsoidal morphology), and the doping concentration of Eu3+ ions from 1% to 16% (dumbbell-like, rod-like). The as-synthesized SrWO4:Ln3+ (Ln = Eu, Tb) samples with various morphologies have an identical scheelite structure and exhibit the characteristic visible emission of the dopant rare earth ions under the excitation of UV light.

Graphical abstract: Controllable synthesis of multi-morphological SrWO4:Ln3+ (Ln = Eu, Tb) hierarchical structures and their luminescence properties

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Publication details

The article was received on 16 Jul 2019, accepted on 10 Sep 2019 and first published on 12 Sep 2019


Article type: Paper
DOI: 10.1039/C9CE01111K
CrystEngComm, 2019, Advance Article

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    Controllable synthesis of multi-morphological SrWO4:Ln3+ (Ln = Eu, Tb) hierarchical structures and their luminescence properties

    J. Huang, W. Lu, D. Yue, Y. Wang, Z. Wang, L. Jin, L. Zhang and Z. Li, CrystEngComm, 2019, Advance Article , DOI: 10.1039/C9CE01111K

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