Controlled synthesis of 3D flower-like MgWO4:Eu3+ hierarchical structures and fluorescence enhancement through introduction of carbon dots. Issue 5 (9th January 2018)

• Record Type: Journal Article
• Authors: Huang, Jingbin; Tian, Boshi; Wang, Jia; Wang, Yabo; Lu, Wei; Li, Qingfeng; Jin, Lin; Li, Chunyang; Wang, Zhenling
• Is Part Of: CrystEngComm. Volume 20:Issue 5(2018)
• Page Start: 608
• Page End: 614
• Publication Date: 2018-01-09
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c7ce02048a
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : 3D flower-like MgWO4 :Eu 3+ structures composed of many nanosheets were synthesized and their luminescence can be enhanced through introduction of CDs. Abstract : 3D flower-like MgWO4 :Eu 3+ hierarchical structures were synthesized via a simple hydrothermal method and characterized by XRD, SEM, TEM, XPS, FTIR and PL. The results show that the as-prepared MgWO4 :Eu 3+ samples have a tetragonal phase structure and possess a 3D flower-like hierarchical morphology. It is found that the Eu 3+ doping concentration (more than 5%) has an obvious effect on the phase structure and the formation of a flower-like morphology, and MgWO4 :Eu 3+ flowers are probably formed from many layered nanosheets. Moreover, the significantly enhanced fluorescence performance of MgWO4 :Eu 3+ flowers by introducing carbon dots (CDs) is also studied. The PL emission intensities of CD/MgWO4 :Eu 3+ composites increase fourfold compared to those of the corresponding MgWO4 :Eu 3+ samples. The luminescence enhancement mechanism could be attributed to the energy transfer processes from the excited states of CDs to Eu 3+ ions in the CD/MgWO4 :Eu 3+ composites. The as-prepared highly fluorescent materials with hierarchical structures might have potential applications in fluorescent lamps, displays, sensors and so on.