As an excellent bottom-up synthesis technique, molten salt synthesis (MSS) method plays a key role in synthesizing nanomaterials of metal oxides with different morphologies. This method is known for its low cost, easiness in operation, environmental friendliness, and capability of scaling up the yield. In recent years, luminescent nanocrystals (NCs) doped with rare earth ions were paid more attention because of their interesting luminescent properties. These can be used in Bioimaging, commercial displays, light emitting diodes (LED), optoelectronic devices, optical data storages and bioassays. Among them lanthanide doped cubic Y2O3 is known as one of the most important commercial phosphors, which can be used in fluorescent lights, cathode ray tubes (CRTS), plasma display panel (PDP), and field emission displays (FED). However, a detailed investigation of molten salt dependent morphology variation and morphology dependent luminescent characteristic of this material is yet to be investigated. Here in we performed MSS to achieve different spherical, polyhedral, spindle, cubic and sheet like nano morphologies of Y2O3 utilizing different eutectic salt systems. The optimized systems were further doped with lanthanides and transition metals to investigate their Luminescence behaviors such as upconversion, down conversion and persistence luminescence where applicable. These systems were characterized with X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS) and fluorescence spectrophotometer. Our initial analysis indicates that by carefully manipulating eutectic salts and other synthesis parameters nanomaterials with different morphologies and desired luminescence properties could be achieved for different applications.

Molten salt synthesis of lanthanide and transition metal doped Y2O3 nanocrystals and studies on their morphology dependent luminescence

Where thousands of chemistry professionals meet to share ideas and advance scientific and technical knowledge. Spring 2023 abstracts, posters, and presentations will launch at the end of March.

ACS Spring 2023

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.