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Assistanted solvothermal synthesis of nanocrystalline self-assembled CaWO4:Tb 3+ microspheres and luminescence properties
Received date: 2020-07-11
Online published: 2021-01-08
The nanocrystalline self-assembled CaWO4：Tb3+ microspheres were synthesized by solvothermal methods with wa-ter and N,N-dimethylformamide（DMF） as binary solvent and sodium succinate as auxiliary agent.The effects of the volume of N,N-dimethylformamide,the dosage of sodium succinate and the amount-of-substance fraction of Tb3+ on luminescence properties of CaWO4：Tb3+ were investigated in detail.The structure,morphology and properties of the product were character-ized by X-ray diffraction（XRD）,UV-vis diffuse reflectance spectroscopy（DRS）,scanning electron microscopy（SEM） and photoluminescence（PL） and dark-box ultraviolet analyzar etc..The results showed that the product was nanocrystalline self-assembled CaWO4：Tb3+ microspheres with the tetragonal structure,which could be obtained after solvothermal treatment with 5 mL DMF as solvent and 1.2 g sodium succinate as additive.The microsphere showed a strong emission peak at 257 nm and a strong fluorescence emission peak near 546 nm.The fluorescence intensity of the microspheres was 3.8 times higher than that of the corresponding product without sodium succinate.
Liqin Qin , Huanggen Yang , De Chen , Pingfang Tao . Assistanted solvothermal synthesis of nanocrystalline self-assembled CaWO4:Tb 3+ microspheres and luminescence properties[J]. Inorganic Chemicals Industry, 2021 , 53(1) : 36 -39 . DOI: 10.11962/1006-4990.2020-0118
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