Morphology-controlled synthesis and luminescence properties of ScPO4·2H2O:Ln3+ nano/micro-crystals by a facile approach. Issue 46 (9th November 2016)

• Record Type: Journal Article
• Authors: Yang, Jun; Cao, Jingjing; Shen, Dingyi; Xiong, Jie; Tang, Jianfeng; Hu, Shanshan
• Is Part Of: CrystEngComm. Volume 18:Issue 46(2016)
• Page Start: 8944
• Page End: 8952
• Publication Date: 2016-11-09
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce01981a
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : ScPO4 ·2H2 O:Ln 3+ nano/micro-crystals with multiform morphologies were prepared at mild temperature without any surfactant. Abstract : Well-crystallized and uniform ScPO4 ·2H2 O and ScPO4 ·2H2 O:Ln 3+ (Ln = Ce, Eu, Tb, Lu) nano/micro-crystals with multiform morphologies, such as sphere, hexagonal plate, diamond, four-angle star, butterfly-shaped and cuboid, have been successfully synthesized by a facile hydrothermal route without any surfactant molecules. XRD, FE-SEM, TEM, PL and kinetic decay were used to characterize the as-prepared products. The size and morphology of ScPO4 ·2H2 O can be determined by the pH value, reaction time, reaction temperature, additive and doping of lanthanide ions. In particular, Ln 3+ doping not only has a crucial role in the morphology of ScPO4 ·2H2 O, but also affects its luminescence properties. The ScPO4 ·2H2 O:Tb 3+ and ScPO4 ·2H2 O:Ce 3+ samples display intense green and blue emissions, respectively. More importantly, the luminescence properties are closely related to morphologies and crystallinity. It can be found that the ScPO4 ·2H2 O:Tb 3+ sample with a hexagonal plate-like morphology possesses much higher emission intensity than those with other morphologies because of its larger anisotropic geometry. ScPO4 :Ln 3+ crystals will become promising candidates for a variety of applications in down/up-conversion luminescence, magnets, lasers, and bio-labeling.