Calcium aluminate phosphor-containing mortar achieved via aqueous metal-ethylenediaminetetraacetic acid complex solution and high-heat treatment

Abstract

Calcium aluminate phosphors were synthesized on mortar substrates using an aqueous solution comprising metal (Al,Eu,Nd)-ethylenediaminetetraacetic acid (EDTA) complexes, followed by treatment with a high-heat hydrogen/oxygen (H2-O2) coupled flame with a variable gas flow rate. The infrastructure functionalizationperformance of the cement system was evaluated through crystal structure analysis and emission/excitation properties investigation. The emission phase of the calcium aluminates was identified using cathodoluminescence microscopy. The afterglow properties were also investigated. Furthermore, a model for the formation of calcium-aluminate phosphors using a metal-EDTA aqueous solution with H2-O2 flame treatment was developed.