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Meeting MS&T23: Materials Science & Technology
Symposium Advanced Ceramics for Environmental Remediation
Presentation Title Small yet Bright?! Microwave-assisted Synthesis of Upconverting Nanoparticles
Author(s) Eva Hemmer
On-Site Speaker (Planned) Eva Hemmer
Abstract Scope The remarkable optical properties of the lanthanides (Ln) make Ln-based materials ideal for applications ranging from biomedicine to optoelectronics and energy conversion technology. This is due the unique electronic properties of the Ln (f-elements) allowing for upconversion, i.e., the emission of UV-visible light under near-infrared excitation. Upconverting nanoparticles (UCNPs) based on sodium lanthanide fluorides (NaLnF4) are commonly synthesized by the thermal decomposition of metal precursors in high-boiling-point solvents, based on convectional heating. Microwave reactors can improve reproducibility as offering better control over a reaction environment, more homogeneous heat distribution yields narrow size distributions, and rapid heating to the desired temperature shortens reaction times from hours to minutes. Targeting applications in optoelectronics, photochemistry, and energy conversion, boosting the efficiency of upconverters is key. This presentation will shed light on the microwave-assisted synthesis of core/(multi)shell UCNPs and highlight pros and cons of this strategy towards the design of small-yet-bright upconverters.


Advanced Materials for Photocatalytic and Photoelectrochemical CO2 Reduction
Building Oxide Semiconductor Structures; From Atom Structure to Microstructure
Ceramic Materials for Sustainable Capture and Reuse of Plant Nutrients as Fertilizer
Confinement and Heterointerface Re-construction in 2D Materials for Water Oxidation Catalysis
Copper Oxide Nanoparticles as a Metal Ion Source for Enhanced Catalytic Stability of Laccase
Design and Structuring of Microporous Ceramics for CO2 Capture and Utilization
Engineered Ceramics for Enhanced Weathering CO2 Capture
Highly Performing Solar-Light-Driven Photodegradation of Metronidazole by Nickel Hexacyanoferrate Nanocubes
In Situ Vibrational Spectroscopy Studies of CO2 Electroreduction at Cu-based Electrocatalysts
Multifunctional Materials for Emerging Technologies
Photocatalysis and Photosensitization Using Atomically Precise Metal Nanoclusters for Solar Energy Harvesting and Conversion
Plasmonic Gas Sensors for Environmental Monitoring
Porous 2D Materials for Water Remediation and Diagnostics
Small yet Bright?! Microwave-assisted Synthesis of Upconverting Nanoparticles
Stripping and Regeneration of Magnetite Adsorbent Used in an Ion Exchange System
The Multipurpose Aspect of Thin Film Ceramic Materials for Photovoltaics and Photocatalysis

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