Synthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates

Hiroaki Onoda, Takehiro Funamoto

Department of Informatics and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan.

DOI: 10.4236/ampc.2012.21008                

Abstract

Mixtures of lanthanum oxide, europium oxide, and phosphoric acid were heated with various ratios of P/(La + Eu) and Eu/(La + Eu). The obtained phosphates were estimated using XRD patterns, FT-IR spectra, and SEM images. The fluo-rescence spectra and resistance against hydrofluoric acid were estimated as functional properties of these phosphate materials. The condensed phosphates showed a strong peak at 615 nm and high resistance against hydrofluoric acid.

Keywords

Condensed Phosphate; Europium; Fluorescence; Resistance against Hydrofluoric Acid

Conflicts of Interest

The authors declare no conflicts of interest.

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