Upconversion photonics in solvothermal Sr2YbF7:Tm3+@Sr2YF7 core-shell nanocrystals for enhanced photocatalytic degradation of pollutants
J. del‐Castillo, J. Méndez‐Ramos, P. Acosta-Mora, A.C. Yanes
Abstract
Spectral conversion of light is an emerging route for enhancing the efficiency of solar energy harvesting schemes. We present high intense UV-blue up-conversion emissions in Sr2YbF7:Tm3+@Sr2YF7 core-shell nanocrystals successfully obtained by solvothermal method. Photocatalytic degradation of organic dye methylene blue (MB), as a pollutant model, has been successfully achieved under NIR radiation, by means of upconversion luminescence coming from core-shell nanocrystals. Thus, we probe a solely upconversion photonic effect to degrade the organic pollutant, converting the incident NIR radiation before its interaction with titanium dioxide photocatalyst.
Topics & Concepts
Photon upconversionPhotocatalysisMaterials scienceNanocrystalPollutantMethylene blueTitanium dioxidePhotonicsDegradation (telecommunications)PhotochemistryOptoelectronicsLuminescenceNanotechnologyChemical engineeringChemistryCatalysisComposite materialOrganic chemistryComputer scienceTelecommunicationsEngineeringLuminescence Properties of Advanced MaterialsAdvanced Photocatalysis TechniquesPerovskite Materials and Applications