Biphasic Sol-Gel Synthesis of Microstructured/Nanostructured YVO4:Eu3+ Materials and Their H2O2 Sensing Ability

Kasumi Motomiya, Kazuya Sugita, Manabu Hagiwara, Shinobu Fujihara

Research output: Contribution to journalArticle

Abstract

Microstructured/nanostructured YVO4:Eu3+ powders and films were synthesized through a biphasic sol-gel method, aiming at their application as H2O2 sensing materials based on the turn-off luminescence of Eu3+ ions. The synthesis was typically carried out at temperatures of 80 °C or lower by using organic solutions to dissolve vanadium alkoxide and aqueous solutions to dissolve yttrium and europium salts together with sodium carboxylates. The resultant crystalline YVO4:Eu3+ powders and films were characterized as containing micrometer-sized particles comprising primary nanoparticles with high specific surface areas. A comparative study was performed on the H2O2-responsive turn-off luminescence properties for the above samples and those synthesized by a single-phase sol-gel or a conventional solid-state reaction method. The results indicated that the microstructural feature of the samples from the biphasic sol-gel method was effective for detecting H2O2 through its adsorption on the particle surface and quenching of the Eu3+ luminescence. The film samples showed repeatable and quantitative turn-off luminescence, thereby demonstrating their suitability as solid-state H2O2 sensors.

Original languageEnglish
Pages (from-to)20353-20361
Number of pages9
JournalACS Omega
Volume4
Issue number23
DOIs
Publication statusPublished - 2019 Dec 3

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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